Who Will Win?

Single-page NextJS app featuring real-time forecasting, betting odds, polls, and news for any given election. It's currently set up for the 2024 presidential election, but could be repurposed for tracking any election.

Running locally

This assumes you have a Postgres database up and running. When you first spin up the database, make sure to run npx prisma db push to initialize the tables.

First, install the dependencies:

npm install

Then, create a .env file in the root directory of this codebase with the following variables:

API_URL="http://localhost:3000/api"
DATABASE_URI="" # Postgres URI goes here
SECRET_KEY="jOFASFL3foj3oi4p32O3%$" # Used to authenticate requests from the cron job
NEWSDATA_API_KEY="" # Get one here: https://newsdata.io/free-news-api
METACULUS_API_KEY=""

Then run the development server:

npm run dev

Open http://localhost:3000 with your browser to see the site.

To actually populate the site with data, you need to run a cron job that periodically hits the http://localhost:3000/api/refresh endpoint. This will fetch the latest data from Metaculus, Polymarket, PredictIt, 538 (polls), and news, and add it to the database. Make sure to include the SECRET_KEY (from the .env file above) in the authorization header of the request.

Acknowledgements

Built by Jonathan Shobrook and originally used to power willtrumpwin.com (now associated with Kalshi).