Negative ads are unavoidable during election season, but this year mailboxes and airwaves seemed even more crowded with political attacks than usual. Non-candidate spending on communications advocating the election or defeat of particular candidates reached nearly $400 million this cycle, according to the Center for Responsive Politics, a nonpartisan campaign finance watchdog organization. That's nearly 60 percent higher than the $268 million spent on the 2006 midterm elections. As a result of a series of recent Supreme Court cases dealing with campaign finance, non-candidate entities like party committees, special interest groups, and political action committees could raise and spend unlimited money on these communications, known as "independent expenditures." These expenditures can go toward advertising on TV, radio, and the Internet, as well as phone banks, canvassing, and mailings. But voters in some districts saw the effects of the new campaign finance rules more than others. Voters in Colorado and Pennsylvania were perhaps the most inundated with ads opposing particular candidates. The Senate candidates in those two states were the top four most-attacked candidates of the 2010 midterm election cycle, as measured in dollars spent on independent expenditures opposing them. In House races, the Rust Belt region saw the most money spent on these political messages--seven of the ten most-attacked House candidates were from districts in Ohio, Michigan, and Pennsylvania.
Below are the ten most-attacked Senate and House candidates of the 2010 election cycle.
Based on U.S. News analysis of data obtained from the Federal Election Commission on November 4, 2010. Data does not reflect independent expenditures made in special elections.