Follow Political Money via This API

Just in time for next week's mid-term US elections, just listed here is this API from The Institute on Money in State Politics. And in this case, it's the domain name that's more telling: It's quite an impressive store of data on the who, where, when and how much of campaign contributors across the US. From their site:

Money in state politics plays a pivotal role in shaping public policy in individual states and across the nation. The nonpartisan Institute on Money in State Politics tracks contributions in all 50 states and makes this data easily searchable online...The Institute collects campaign-finance data for state-level candidates, party committees and ballot-measure committees in all 50 states. Each two-year election cycle, data-acquisition specialists compile more than 90,000 disclosure reports from more than 16,000 candidates in the states and process more than 3.2 million records of contribution information.

There are about 30 API methods and are grouped by function: states, candidates, party_pacs, ballot_measures, and contributors. For code samples, use their interactive API tester and code generator. They even offer a handy Widget Builder so you can place a widget on your site that displays live data about your (least) favorite candidate or PAC (political action committee). You'll need to sign-up for an API key in order to use this, but it is a fairly painless process. Below is a screenshot of an example widget, in this case the Economic Sector Breakdown for Arnold Schwarzenegger in California for 2003.

Follow The Money

For an earlier good mashup on visualizing where political money comes from, see Following Political Dollars.

Follow Political Dollars

On a similar vein, here are 15 mashups tagged 'politics' and 11 mashups tagged 'advocacy'.

Be sure to read the next News Services article: New APIs: Comics, Phishing and Shopping


Comments (5)

David, maybe you can get in touch with the folks at, I think I remember someone integrating their data externally.

At USF, We're working on a similar site for local San Francisco politics,, along with a collaborative people directory, We want to mash state data in, and it looks like's api will be perfect. At the federal level, I don't think has an api, and it looks like only has a database download. Anyone know of an api to federal campaign funding data?

[...] The Institute on Money in State Politics API: As noted in yesterday’s blog post, this new API gives you access to a deep store of data on US political contributions. As they say, follow the money. [...]

[...] There are a lot of good implementation details in the API for this non-profit, one of which is this AJAX example with download-able source code. For more on FollowTheMoney, see our earlier coverage here. [...]

[...] Besides having an API of their own, the Sunlight Foundation also assists organizations in making data available by creating their own APIs. One such example is the very well designed and useful Follow The Money API from the Institute on Money in State Politics (see our earlier coverage on this). [...]