Every browse page on pac.dog is a 1:1 mirror of one of the REST endpoints documented below. The same query helpers power both surfaces — what you see in the UI, you can fetch as JSON.
Spec: openapi.json (OpenAPI 3.1). Drop it into Postman, openapi-fetch, openapi-typescript, etc.
pac.dog is a free, independent, non-partisan research tool. Every candidate, committee, bill, vote, member, and nonprofit on this site is mirrored from primary U.S. government sources (FEC, congress.gov, govinfo.gov, IRS) and each state's Secretary of State / election commission — no third-party data vendors, no paywall, no editorial intermediation. Citations to the originating source are on every detail page.
Estimated value: $180/mo per user — but we made it free.