Campaign finance data and more
California Secretary of State’s Political Reform Division

The Political Reform Division administers provisions of California’s Political Reform Act, including the law’s most fundamental purpose of ensuring that “receipts and expenditures in election campaigns should be fully and truthfully disclosed in order that the voters may be fully informed and the activities of lobbyists should be regulated and their finances disclosed.”

Center for Public Integrity

The Center for Public Integrity is perhaps best known for its investigative studies and exhaustively researched publications, some available for free online and others available for purchase.

Center for Responsive Politics

The Center for Responsive Politics is a non-partisan, non-profit research group based in Washington, D.C. that tracks money in politics, and its effect on elections and public policy. The Center conducts computer-based research on campaign finance issues for the news media, academics, activists and the public at large. The Center’s work is aimed at creating a more educated voter, an involved citizenry and a more responsive government.

National Institute on Money in State Politics

The National Institute on Money in State Politics is a nonpartisan, nonprofit program dedicated to accurate, comprehensive and unbiased documentation and research on campaign finance at the state level.