diff --git a/alembic/versions/ec225b9c33e3_voting_days_for_votingphase_and_votingphasetype.py b/alembic/versions/ec225b9c33e3_voting_days_for_votingphase_and_votingphasetype.py
new file mode 100644
index 00000000..8f986d25
--- /dev/null
+++ b/alembic/versions/ec225b9c33e3_voting_days_for_votingphase_and_votingphasetype.py
@@ -0,0 +1,35 @@
+"""voting_days for VotingPhase and VotingPhaseType
+
+Revision ID: ec225b9c33e3
+Revises: 50a310f352b0
+Create Date: 2021-07-10 16:11:51.416233
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = 'ec225b9c33e3'
+down_revision = '50a310f352b0'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column(
+        'voting_phase_types',
+        sa.Column('voting_days', sa.Integer(), nullable=True, comment='voting duration in days; ends at target date')
+    )
+    op.add_column(
+        'votingphases',
+        sa.Column('voting_days', sa.Integer(), nullable=True, comment='voting duration in days; ends at target date')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('votingphases', 'voting_days')
+    op.drop_column('voting_phase_types', 'voting_days')
+    # ### end Alembic commands ###
diff --git a/src/ekklesia_portal/concepts/voting_phase/voting_phase_cells.py b/src/ekklesia_portal/concepts/voting_phase/voting_phase_cells.py
index fbfc2fe9..207d4054 100644
--- a/src/ekklesia_portal/concepts/voting_phase/voting_phase_cells.py
+++ b/src/ekklesia_portal/concepts/voting_phase/voting_phase_cells.py
@@ -24,7 +24,17 @@ def show_new_button(self):
 @App.cell(VotingPhase)
 class VotingPhaseCell(LayoutCell):
     model_properties = [
-        'ballots', 'department', 'description', 'name', 'phase_type', 'secret', 'status', 'target', 'title'
+        'ballots',
+        'department',
+        'description',
+        'name',
+        'phase_type',
+        'secret',
+        'status',
+        'target',
+        'title',
+        'voting_end',
+        'voting_start',
     ]
 
     def show_edit_button(self):
@@ -43,15 +53,6 @@ def show_voting(self):
     def propositions(self):
         return [p for b in self._model.ballots for p in b.propositions]
 
-    def voting_start(self):
-        if self._model.target is None:
-            return
-        # XXX: Fixed time interval for voting! We need a proper setting here.
-        return self._model.target - datetime.timedelta(days=14)
-
-    def voting_end(self):
-        return self._model.target
-
     def votings(self):
         votings = []
         for name, settings in self._model.department.voting_module_settings.items():
diff --git a/src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py b/src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py
index 0e0291bf..8dcbf29b 100644
--- a/src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py
+++ b/src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py
@@ -15,6 +15,7 @@ class VotingPhaseSchema(Schema):
     department_id = int_property(title=_('department'))
     phase_type_id = int_property(title=_('voting_phase_type'))
     secret = bool_property(title=_('secret_voting_possible'))
+    voting_days = int_property(title=_('voting_days'), missing=None)
     description = string_property(title=_('description'), validator=Length(min=10, max=65536), missing='')
     voting_module_data = json_property(title=_('voting_module_data'), missing={})
 
diff --git a/src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade b/src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade
index 0a566ee7..e2ea36f4 100644
--- a/src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade
+++ b/src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade
@@ -29,6 +29,9 @@
       dd= abbreviation
       dt= _('voting_type')
       dd= voting_type|enum_value
+      if voting_days
+        dt= _('voting_days')
+        dd= voting_days
       dt= _('secret_voting_possible')
       dd= secret_voting_possible|yesno
 
diff --git a/src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_cells.py b/src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_cells.py
index 8873714c..03b7aaab 100644
--- a/src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_cells.py
+++ b/src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_cells.py
@@ -27,6 +27,7 @@ class VotingPhaseTypeCell(LayoutCell):
         'name',
         'secret_voting_possible',
         'voting_type',
+        'voting_days',
     ]
 
     def show_edit_button(self):
diff --git a/src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py b/src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py
index eb23721b..acbbfe42 100644
--- a/src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py
+++ b/src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py
@@ -1,7 +1,7 @@
 from colander import Length
 from deform import Button
 from deform.widget import Select2Widget, TextAreaWidget
-from ekklesia_common.contract import Schema, Form, bool_property, string_property, enum_property
+from ekklesia_common.contract import Schema, Form, bool_property, int_property, string_property, enum_property
 from ekklesia_common.translation import _
 
 from ekklesia_portal.enums import VotingType
@@ -12,6 +12,7 @@ class VotingPhaseTypeSchema(Schema):
     abbreviation = string_property(title=_('abbreviation'), validator=Length(max=6))
     secret_voting_possible = bool_property(title=_('secret_voting_possible'))
     voting_type = enum_property(VotingType, title=_('voting_type'))
+    voting_days = int_property(title=_('voting_days'), missing=None)
     description = string_property(title=_('description'), validator=Length(min=10, max=2000), missing='')
 
 
diff --git a/src/ekklesia_portal/datamodel.py b/src/ekklesia_portal/datamodel.py
index 33267376..9ac64514 100644
--- a/src/ekklesia_portal/datamodel.py
+++ b/src/ekklesia_portal/datamodel.py
@@ -18,7 +18,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 # For more details see the file COPYING.
 
-from datetime import datetime
+from datetime import datetime, timedelta
 import math
 
 from ekklesia_common.database import Base, C, LIDType, integer_pk
@@ -49,7 +49,9 @@ class Group(Base):
     id: int = C(Integer, Sequence('id_seq', optional=True), primary_key=True)
     name: str = C(Text, unique=True, nullable=False)
     is_admin_group: bool = C(Boolean, nullable=False, server_default='false')
-    members = association_proxy('group_members', 'member', creator=lambda u: GroupMember(member=u))  # <-GroupMember-> User
+    members = association_proxy(
+        'group_members', 'member', creator=lambda u: GroupMember(member=u)
+    )  # <-GroupMember-> User
 
 
 class User(Base):
@@ -73,7 +75,9 @@ class User(Base):
     )
     # actions: submit/support proposition, voting, or explicit, deactivate after 2 periods
     profile = relationship("UserProfile", uselist=False, back_populates="user")
-    groups = association_proxy('member_groups', 'group', creator=lambda g: GroupMember(group=g))  # <-GroupMember-> Group
+    groups = association_proxy(
+        'member_groups', 'group', creator=lambda g: GroupMember(group=g)
+    )  # <-GroupMember-> Group
     # from user/membership/ all_nested_groups
     departments = association_proxy('member_departments', 'department')  # <-DepartmentMember-> Department
     areas = association_proxy('member_areas', 'area')  # <-AreaMember-> SubjectArea
@@ -318,19 +322,19 @@ class VotingPhaseType(Base):
     abbreviation: str = C(Text, server_default='', comment='abbreviated name')
     secret_voting_possible: bool = C(Boolean, nullable=False)
     voting_type = C(Enum(VotingType), nullable=False)  # online, urn, assembly, board
+    voting_days: int = C(Integer, comment='voting duration in days; ends at target date')
     description: str = C(Text, server_default='')
 
 
 class VotingPhase(Base):  # Abstimmungsperiode
     __tablename__ = 'votingphases'
     __table_args__ = (
-        CheckConstraint(
-            "status='PREPARING' OR (status!='PREPARING' AND target IS NOT NULL)", 'state_valid'
-        ),
+        CheckConstraint("status='PREPARING' OR (status!='PREPARING' AND target IS NOT NULL)", 'state_valid'),
     )
     id: int = C(Integer, Sequence('id_seq', optional=True), primary_key=True)
     status: VotingStatus = C(Enum(VotingStatus), nullable=False, server_default='PREPARING')
     target: datetime = C(DateTime, comment='constrained by §4.1')
+    voting_days: int = C(Integer, comment='voting duration in days; ends at target date')
     department_id: int = C(Integer, ForeignKey('departments.id'), nullable=False)
     phase_type_id: int = C(Integer, ForeignKey('voting_phase_types.id'), nullable=False)
     secret: bool = C(
@@ -361,7 +365,23 @@ def ballots_can_be_added(self):
 
     @property
     def voting_can_be_created(self):
-        return self.status == VotingStatus.PREPARING and self.target is not None
+        return self.status == VotingStatus.PREPARING and self.voting_start is not None and self.voting_end is not None
+
+    @property
+    def voting_start(self):
+        if self.target is None:
+            return
+
+        days = self.voting_days or self.phase_type.voting_days
+
+        if days is None:
+            return
+
+        return self.target - timedelta(days=days)
+
+    @property
+    def voting_end(self):
+        return self.target
 
 
 class Supporter(Base):  # §3.5
diff --git a/src/ekklesia_portal/translations/de/LC_MESSAGES/messages.po b/src/ekklesia_portal/translations/de/LC_MESSAGES/messages.po
index d075c56f..7b70c916 100644
--- a/src/ekklesia_portal/translations/de/LC_MESSAGES/messages.po
+++ b/src/ekklesia_portal/translations/de/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-07-06 23:07+0000\n"
+"POT-Creation-Date: 2021-07-10 22:49+0000\n"
 "PO-Revision-Date: 2015-09-06 22:42+0200\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language: de\n"
@@ -50,8 +50,8 @@ msgstr "Ausführlich"
 #: src/ekklesia_portal/concepts/proposition_type/proposition_type_contracts.py:18
 #: src/ekklesia_portal/concepts/subject_area/subject_area_contracts.py:17
 #: src/ekklesia_portal/concepts/user/user_contracts.py:18
-#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:25
-#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:21
+#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:26
+#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:22
 msgid "submit"
 msgstr "Senden"
 
@@ -301,9 +301,9 @@ msgstr "Neue Textanpassung"
 #: src/ekklesia_portal/concepts/proposition_type/templates/proposition_type.j2.jade:12
 #: src/ekklesia_portal/concepts/subject_area/subject_area_contracts.py:11
 #: src/ekklesia_portal/concepts/subject_area/templates/subject_area.j2.jade:12
-#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:18
-#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:19
-#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:15
+#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:19
+#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:21
+#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:16
 msgid "description"
 msgstr "Beschreibung"
 
@@ -571,7 +571,7 @@ msgstr "Minimale Anzahl an Unterstützern"
 
 #: src/ekklesia_portal/concepts/policy/policy_contracts.py:16
 #: src/ekklesia_portal/concepts/policy/templates/policy.j2.jade:16
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_support_action.j2.jade:13
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:15
 msgid "qualification_quorum"
 msgstr "Unterstützer-Quorum zur Zulassung zur Abstimmung"
 
@@ -787,24 +787,24 @@ msgstr "Begründung"
 msgid "changes"
 msgstr "Änderungen"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting_action.j2.jade:5
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting.j2.jade:5
 msgid "button_retract_secret_voting"
 msgstr "Forderung auf Papierabstimmung zurückziehen"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting_action.j2.jade:8
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting.j2.jade:8
 msgid "button_request_secret_voting"
 msgstr "Papierabstimmung fordern"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting_action.j2.jade:13
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting.j2.jade:13
 msgid "abbr_secret_voters_count"
 msgstr "Anzahl Befürworter für Papierabstimmung"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting_action.j2.jade:13
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting.j2.jade:13
 msgid "abbr_secret_voting_quorum"
 msgstr "Quorum für Papierabstimmung"
 
 #: src/ekklesia_portal/concepts/proposition/templates/proposition_small.j2.jade:10
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_support_action.j2.jade:13
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:15
 #: src/ekklesia_portal/concepts/proposition/templates/status/proposition_status_scheduled.j2.jade:2
 #: src/ekklesia_portal/concepts/proposition/templates/status/proposition_status_submitted.j2.jade:2
 msgid "supporter"
@@ -836,14 +836,19 @@ msgstr ""
 msgid "title_notice"
 msgstr "Hinweis"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_support_action.j2.jade:5
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:5
 msgid "button_retract_support"
 msgstr "Unterstützung zurückziehen"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_support_action.j2.jade:8
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:8
 msgid "button_support"
 msgstr "Unterstützen"
 
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:10
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:19
+msgid "supporters"
+msgstr "Unterstützer"
+
 #: src/ekklesia_portal/concepts/proposition/templates/propositions.j2.jade:6
 msgid "btn_sort_by_identifier_or_title"
 msgstr "Nach Kennung/Titel sortieren"
@@ -1238,12 +1243,18 @@ msgid "voting_phase_type"
 msgstr "Art des Abstimmungszeitraums"
 
 #: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:17
-#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:15
+#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:17
 #: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:13
 msgid "secret_voting_possible"
 msgstr "Geheime Abstimmung möglich?"
 
-#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:19
+#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:18
+#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:15
+#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:15
+msgid "voting_days"
+msgstr "Dauer der Abstimmung in Tagen"
+
+#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:20
 msgid "voting_module_data"
 msgstr "Daten für externe Abstimmungssysteme"
 
diff --git a/src/ekklesia_portal/translations/en/LC_MESSAGES/messages.po b/src/ekklesia_portal/translations/en/LC_MESSAGES/messages.po
index 1991f620..88745995 100644
--- a/src/ekklesia_portal/translations/en/LC_MESSAGES/messages.po
+++ b/src/ekklesia_portal/translations/en/LC_MESSAGES/messages.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-07-06 23:07+0000\n"
+"POT-Creation-Date: 2021-07-10 22:49+0000\n"
 "PO-Revision-Date: 2015-09-06 22:42+0200\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language: en\n"
@@ -50,8 +50,8 @@ msgstr "Details"
 #: src/ekklesia_portal/concepts/proposition_type/proposition_type_contracts.py:18
 #: src/ekklesia_portal/concepts/subject_area/subject_area_contracts.py:17
 #: src/ekklesia_portal/concepts/user/user_contracts.py:18
-#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:25
-#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:21
+#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:26
+#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:22
 msgid "submit"
 msgstr "Submit"
 
@@ -301,9 +301,9 @@ msgstr "New Text Customization"
 #: src/ekklesia_portal/concepts/proposition_type/templates/proposition_type.j2.jade:12
 #: src/ekklesia_portal/concepts/subject_area/subject_area_contracts.py:11
 #: src/ekklesia_portal/concepts/subject_area/templates/subject_area.j2.jade:12
-#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:18
-#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:19
-#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:15
+#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:19
+#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:21
+#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:16
 msgid "description"
 msgstr "Description"
 
@@ -571,7 +571,7 @@ msgstr "Minimum number of supporters"
 
 #: src/ekklesia_portal/concepts/policy/policy_contracts.py:16
 #: src/ekklesia_portal/concepts/policy/templates/policy.j2.jade:16
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_support_action.j2.jade:13
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:15
 msgid "qualification_quorum"
 msgstr "Supporter quorum for voting qualification"
 
@@ -786,24 +786,24 @@ msgstr "Motivation"
 msgid "changes"
 msgstr "Changes"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting_action.j2.jade:5
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting.j2.jade:5
 msgid "button_retract_secret_voting"
 msgstr "Retract Voting on Paper Request"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting_action.j2.jade:8
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting.j2.jade:8
 msgid "button_request_secret_voting"
 msgstr "Request Voting on Paper"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting_action.j2.jade:13
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting.j2.jade:13
 msgid "abbr_secret_voters_count"
 msgstr "number of supporters for vote on paper"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting_action.j2.jade:13
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_secret_voting.j2.jade:13
 msgid "abbr_secret_voting_quorum"
 msgstr "quorum for vote on paper"
 
 #: src/ekklesia_portal/concepts/proposition/templates/proposition_small.j2.jade:10
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_support_action.j2.jade:13
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:15
 #: src/ekklesia_portal/concepts/proposition/templates/status/proposition_status_scheduled.j2.jade:2
 #: src/ekklesia_portal/concepts/proposition/templates/status/proposition_status_submitted.j2.jade:2
 msgid "supporter"
@@ -832,14 +832,19 @@ msgstr ""
 msgid "title_notice"
 msgstr "Note"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_support_action.j2.jade:5
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:5
 msgid "button_retract_support"
 msgstr "Retract support"
 
-#: src/ekklesia_portal/concepts/proposition/templates/proposition_support_action.j2.jade:8
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:8
 msgid "button_support"
 msgstr "Support"
 
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:10
+#: src/ekklesia_portal/concepts/proposition/templates/proposition_support.j2.jade:19
+msgid "supporters"
+msgstr "Supporter"
+
 #: src/ekklesia_portal/concepts/proposition/templates/propositions.j2.jade:6
 msgid "btn_sort_by_identifier_or_title"
 msgstr "Sort by Identifier/Title"
@@ -1228,12 +1233,18 @@ msgid "voting_phase_type"
 msgstr "Voting Phase Type"
 
 #: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:17
-#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:15
+#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:17
 #: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:13
 msgid "secret_voting_possible"
 msgstr "Secret voting possible?"
 
-#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:19
+#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:18
+#: src/ekklesia_portal/concepts/voting_phase_type/templates/voting_phase_type.j2.jade:15
+#: src/ekklesia_portal/concepts/voting_phase_type/voting_phase_type_contracts.py:15
+msgid "voting_days"
+msgstr "Voting time in days"
+
+#: src/ekklesia_portal/concepts/voting_phase/voting_phase_contracts.py:20
 msgid "voting_module_data"
 msgstr "External Voting Data"
 
diff --git a/tests/create_test_db.py b/tests/create_test_db.py
index 7d9e67a9..05e744f4 100644
--- a/tests/create_test_db.py
+++ b/tests/create_test_db.py
@@ -18,8 +18,11 @@
 logging.basicConfig(level=logging.INFO)
 
 parser = argparse.ArgumentParser("Ekklesia Portal create_test_db.py")
-parser.add_argument("-c", "--config-file",
-    help=f"Optional path to config file in YAML / JSON format. Uses default test configuration when not set.")
+parser.add_argument(
+    "-c",
+    "--config-file",
+    help=f"Optional path to config file in YAML / JSON format. Uses default test configuration when not set."
+)
 parser.add_argument("--doit", action="store_true", default=False)
 
 DOCUMENT_WP = '''# Wahlprogramm
@@ -75,7 +78,6 @@
 Du kannst die Bearbeitung sperren lassen. Wende dich dazu an die Antragskommission.
 '''
 
-
 if __name__ == "__main__":
 
     logg = logging.getLogger(__name__)
@@ -175,7 +177,11 @@
     depadmin.areas.extend([subject_area_ppd_allg])
 
     voting_phase_type_ur = VotingPhaseType(
-        name='Online-Urabstimmung', voting_type=VotingType.ONLINE, abbreviation='UR', secret_voting_possible=False
+        name='Online-Urabstimmung',
+        voting_type=VotingType.ONLINE,
+        abbreviation='UR',
+        secret_voting_possible=False,
+        voting_days=14
     )
     voting_phase_type_bpt = VotingPhaseType(
         name='Bundesparteitag', voting_type=VotingType.ASSEMBLY, abbreviation='BPT', secret_voting_possible=True
@@ -188,6 +194,7 @@
         secret=True,
         title='BPT 2020.1',
         name='bpt201',
+        voting_days=2,
         description='Der nächste Parteitag irgendwo'
     )
 
@@ -258,7 +265,9 @@
     t2 = Tag(name="Tag2")
     t3 = Tag(name="Täääg3")
 
-    b1 = Ballot(area=subject_area_pps_in, voting=voting_phase_ppd_bpt_scheduled, name="PP001/2/3/4", proposition_type=ptype_pol)
+    b1 = Ballot(
+        area=subject_area_pps_in, voting=voting_phase_ppd_bpt_scheduled, name="PP001/2/3/4", proposition_type=ptype_pol
+    )
     s.add(b1)
     q1 = Proposition(
         title="Ein Titel",
diff --git a/tests/test_db.sql b/tests/test_db.sql
index 0525db4a..c432aad7 100644
--- a/tests/test_db.sql
+++ b/tests/test_db.sql
@@ -1511,7 +1511,8 @@ CREATE TABLE public.voting_phase_types (
     abbreviation text DEFAULT ''::text,
     secret_voting_possible boolean NOT NULL,
     voting_type public.votingtype NOT NULL,
-    description text DEFAULT ''::text
+    description text DEFAULT ''::text,
+    voting_days integer
 );
 
 
@@ -1529,6 +1530,13 @@ COMMENT ON COLUMN public.voting_phase_types.name IS 'readable name';
 COMMENT ON COLUMN public.voting_phase_types.abbreviation IS 'abbreviated name';
 
 
+--
+-- Name: COLUMN voting_phase_types.voting_days; Type: COMMENT; Schema: public; Owner: -
+--
+
+COMMENT ON COLUMN public.voting_phase_types.voting_days IS 'voting duration in days; ends at target date';
+
+
 --
 -- Name: voting_phase_types_id_seq; Type: SEQUENCE; Schema: public; Owner: -
 --
@@ -1558,6 +1566,7 @@ CREATE TABLE public.votingphases (
     title text DEFAULT ''::text,
     description text DEFAULT ''::text,
     voting_module_data jsonb DEFAULT '{}'::jsonb,
+    voting_days integer,
     CONSTRAINT ck_votingphases_state_valid CHECK (((status = 'PREPARING'::public.votingstatus) OR ((status <> 'PREPARING'::public.votingstatus) AND (target IS NOT NULL))))
 );
 
@@ -1583,6 +1592,13 @@ COMMENT ON COLUMN public.votingphases.secret IS 'whether any secret votes will t
 COMMENT ON COLUMN public.votingphases.name IS 'short, readable name which can be used for URLs';
 
 
+--
+-- Name: COLUMN votingphases.voting_days; Type: COMMENT; Schema: public; Owner: -
+--
+
+COMMENT ON COLUMN public.votingphases.voting_days IS 'voting duration in days; ends at target date';
+
+
 --
 -- Name: votingphases_id_seq; Type: SEQUENCE; Schema: public; Owner: -
 --
@@ -1602,7 +1618,7 @@ ALTER TABLE public.votingphases ALTER COLUMN id ADD GENERATED BY DEFAULT AS IDEN
 --
 
 COPY public.alembic_version (version_num) FROM stdin;
-50a310f352b0
+ec225b9c33e3
 \.
 
 
@@ -1953,9 +1969,9 @@ COPY public.voting_module (id, name, description, base_url, module_type) FROM st
 -- Data for Name: voting_phase_types; Type: TABLE DATA; Schema: public; Owner: -
 --
 
-COPY public.voting_phase_types (id, name, abbreviation, secret_voting_possible, voting_type, description) FROM stdin;
-1	Bundesparteitag	BPT	t	ASSEMBLY	
-2	Online-Urabstimmung	UR	f	ONLINE	
+COPY public.voting_phase_types (id, name, abbreviation, secret_voting_possible, voting_type, description, voting_days) FROM stdin;
+1	Bundesparteitag	BPT	t	ASSEMBLY		\N
+2	Online-Urabstimmung	UR	f	ONLINE		14
 \.
 
 
@@ -1963,10 +1979,10 @@ COPY public.voting_phase_types (id, name, abbreviation, secret_voting_possible,
 -- Data for Name: votingphases; Type: TABLE DATA; Schema: public; Owner: -
 --
 
-COPY public.votingphases (id, status, target, department_id, phase_type_id, secret, name, title, description, voting_module_data) FROM stdin;
-2	PREPARING	\N	5	2	f	ur19+	Urabstimmung 2019+	eine **Urabstimmung** in Zentalschweiz	{}
-3	FINISHED	2019-11-10 00:00:00	3	1	t	bpt192	BPT 2019.2	Der BPT in Bad Homburg	{}
-1	PREPARING	2020-11-11 00:00:00	3	1	t	bpt201	BPT 2020.1	Der nächste Parteitag irgendwo	{}
+COPY public.votingphases (id, status, target, department_id, phase_type_id, secret, name, title, description, voting_module_data, voting_days) FROM stdin;
+2	PREPARING	\N	5	2	f	ur19+	Urabstimmung 2019+	eine **Urabstimmung** in Zentalschweiz	{}	\N
+3	FINISHED	2019-11-10 00:00:00	3	1	t	bpt192	BPT 2019.2	Der BPT in Bad Homburg	{}	\N
+1	PREPARING	2020-11-11 00:00:00	3	1	t	bpt201	BPT 2020.1	Der nächste Parteitag irgendwo	{}	2
 \.