Sunlight Foundation

Eight political-watchdog groups Wednesday asked Sens. John McCain and Barack Obama to disclose more about the fundraising for their presidential campaigns, including new details about the fundraisers who "bundle" tens of thousands of dollars. "For those to whom much private money has been contributed, much is required," the groups wrote, noting that spending on this year's election already has topped $1 billion -- a record for this point in the campaign. The groups making the request are the Campaign Finance Institute, the Center for Responsive Politics, Common Cause, Democracy 21, the League of Women Voters of the United States, Public Citizen, the Sunlight Foundation and U.S. PIRG.