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About our data
Read the details about our data sources and methodology. Data refers to direct contributions to the campaign committees of elected legislators. For example, contribution totals exclude contributions to party committees such as the RNC or the DNC and exclude contributions made to individuals that did not win their election.
For U.S. Congress, contributions data provided by the Center for Responsive Politics (OpenSecrets.org) and legislative data provided by GovTrack.us.
California contributions data provided by the National Institute on Money in State Politics (FollowTheMoney.org).
Wisconsin contributions data provided by the Wisconsin Democracy Campaign (wisdc.org).