Opensecrets.org

http://opensecrets.org/pres08/   

The Center for Responsive Politics has created the guide to the money in United States Politics. It tracks all the money that has been spent for any political campaign. It has a special focus for the Presidential Election 2008.

Campaign Finance Site

http://www.campaignfinancesite.org

The Hoover Institution of Stanford University campaign finance site.

Federal Elections Commission

http://www.fec.gov/disclosure.shtml

The Federal Elections Commission's site for campaign finance reports and disclosures.

Investigative Reporters and Editors Campaign Finance Information Center

http://www.campaignfinance.org/

IRE's campaign finance information site.

Brookings Institute 

http://www.brookings.edu/topics/campaign-finance.aspx

Brookings Institute campaign finance site, includes a campaign finance source book.

Washington Post

Campaign Finance Special Report

http://www.washingtonpost.com/wp-srv/politics/special/campfin/campfin.htm

Washington Post special site on campaign finance with links to special reports, key players and links & sources.

Campaign FInance Institute

http://www.cfinst.org/

The Campaign Finance Institute is a non-partisan, non-profit institute, affiliated with The George Washington University. Conducts objective research and education, empanels task forces and makes recommendations for policy change in the field of campaign finance.

Campaign Money

http://www.campaignmoney.com/

Data complied from the Federal Election Commission.

Follow the Money - The National Institute on Money in State Politics

http://www.followthemoney.org/

Includes searchable database.

New York City Campaign Finance Board

http://www.nyccfb.info/public/resources/summaries.aspx

Includes searchable database.

New York State Board of Elections - Campaign Finance Disclosures

http://www.elections.state.ny.us/DisclosureReports.html

Includes searchable database.