Source-linked U.S. election and civic records with coverage limits.
Election API is a free Government API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Public beta documentation for Election.org address, ballot, representative, judicial, candidate, government-unit, committee, campaign-finance, certified-result, vendor, and state disclosure-registry endpoints.
Details from election.org.

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The Election API is provided by Election.org (election.org). Public beta documentation for Election.org address, ballot, representative, judicial, candidate, government-unit, committee, campaign-finance, certified-result, vendor, and state disclosure-registry endpoints.
Yes. The Election API is listed in the Government category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Election API requires no authentication, so you can start making requests without signing up.
Yes. The Election API supports CORS, so front-end JavaScript can call it directly.
Yes. The Election API is served over HTTPS, so it's safe to use in production.