With the Campaign Finance API, you can retrieve contribution and expenditure data based on United States Federal Election Commission filings. Campaign finance data is public and is therefore available from a variety of sources, but the developers of the Times API have distilled the data into aggregates that answer most campaign finance questions. Instead of poring over monthly filings or searching a disclosure database, you can use the Times Campaign Finance API to quickly retrieve totals for a particular candidate, see aggregates by ZIP code or state, or get details on a particular donor. - Erica Smith
