Toronto Election Poll Tracker

Static Next.js frontend for Toronto's 2026 municipal election guide. Production builds consume checksum-verified Results, Polling, and Backend GitHub Releases.

Getting Started

Install dependencies and run against the committed development fixtures:

npm ci
FEED_LOCAL_DIR=./fixtures npm run dev

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

Run npm test, npm run lint, and npm run build before opening a pull request. Fixtures are development/test artifacts and are never promoted to production.

For a design preview intended to reflect the current election, read the live site's /data/source-manifest.json, then resolve its exact Backend tag with BACKEND_RELEASE_TAG=backend-YYYY-MM-DD.N npm run vercel-build, then npm start. This verifies and consumes the complete pinned release chain. A fixture preview can omit newer polls and other released information; use it only for deliberate offline or test scenarios. See the release guide below for provenance checks.

Production deployment

Do not deploy with a raw-GitHub URL or NEXT_PUBLIC_DATA_REVISION. Follow the production release guide to resolve the immutable release chain, verify its source manifest, deploy through Vercel, and roll back.