API, one state
$499 through Dec 31, 2027
per state
Every endorsement in one state, with the elections, contests, candidates, measures and endorsers behind it, through December 31, 2027.
Buy API, one statePricing
The only source of AI-optimized endorsement and election data, for one state or every state we cover. One payment licenses the data through December 31, 2027, including every endorsement we add until then.
The BallotData API
Every endorsement, with the contests, candidates and endorsers behind it. What it does
API, national
$4,999 through Dec 31, 2027
every state we cover
The nationwide endorsement dataset: every state we cover, with the elections, contests, candidates, measures and endorsers behind it, through December 31, 2027.
Buy API, nationalNewEvery API purchase includes our MCP server, so Claude, ChatGPT and other AI assistants can read the data through your API account, at no extra cost.
Returning for 2028
Endorsement Stream
New endorsements as we find them, by email, as CSV or JSON files, over a live stream or as a postback to your server, usually within the hour for endorsers we already follow. It’s coming back for the 2028 elections and isn’t sold until then. What’s in it
Hear when it’s back
Questions
- What makes it useful for research?
- Every endorsement has the same fields in every state, is tied to the choice on the printed ballot, and links to the page it came from, so you can analyze it, cite it and check it.
- What’s included?
- Every endorsement we have in the states you buy, with its election, contest, district, ballot choice, endorser category, source link and date published, plus every endorsement we add through December 31, 2027. See the coverage for what we have today.
- Can I buy a few states and add more later?
- Yes. A state costs $499; every state we cover costs $4,999. Buy more whenever you like, and they’re added to the same API account.
- Can I use it with Claude, ChatGPT or other AI assistants?
- Yes. Our new MCP server is included with every API purchase at no extra cost. Add it to Claude, ChatGPT or another assistant that supports MCP, sign in with your API email and password, and ask questions about the states you bought.
- How do I pay?
- By card through Stripe, in one payment. What you buy runs through December 31, 2027 and doesn’t renew, so there’s nothing to cancel. Receipts are in your account.
- Is there a guarantee?
- No one publishes a complete list of every race and endorsement, so we gather as many as we can find and keep adding more. We work hard to be correct, but we can’t promise it: the data is provided as is, with no service level agreement. See the Terms of Service.