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Quadratic Voting App

This is an open-source Quadratic Voting (QV) system with full front-end and back-end implementation. It is designed to be quickly launched with Heroku and can easily be customized.

Quadratic Voting

Quadratic Voting was first introduced by Steven P. Lalley and E. Glen Weyl as a collective decision-making mechanism. Details of this voting process can be found here.

Prerequisites

This project was generated with Angular CLI version 8.3.4.

Development server

Run ng serve for a dev server. Navigate to http://localhost:4200/. The app will automatically reload if you change any of the source files.

Code scaffolding

This app is built on Python Flask + Angular.

Angular 8.3+
Python 3.6+

To start the app, you need a .env file located in the server folder with the following schema:

# Mongo
mongo_url=[your mongodb url]

Build

Run the following command for the first time

npm install
python -m venv .venv
pip install -r ./server/requirements.txt

To start the server

ng build && flask run

Features

  • Supports naive QV
  • Supports multiple questions
  • Supports rendering different set of questions through URL

Customizing application

  • You can customize the questions by editing json file: server/data/example.json. The schema should be the following:
{
  "setting":{
    "style":"binary"
  },
  "question_list":[
    {
      "qid":1,
      "question":"This is an example question number 1",
      "description":"This is the description place holder for Question 1",
      "options":[
        {
          "o_id":1,
          "option":"Option1",
          "description":"Description for option1"
        }, ...
  • To add multiple QV files, place multiple json files usner server/data/. For it to be routed, you need to change the array in the file utils.py under ther server folder.

Further help

Contact both authors for any questions