Rep. Charles Rangel, shown leaving his office for a vote at the Capitol in July, is accused of 13 ethics violations. Among them: that he lied about his finances in his personal disclosure filings and dodged taxes on rental income from a vacation home in the Dominican Republic. Alex Wong/Getty Images hide caption

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Sen. Jim DeMint (R-SC), shown speaking to the Values Voter Summit in Washington in September, has new clout in the Republican Party after backing conservative candidates in the midterm elections. Jacquelyn Martin/AP hide caption

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Sen. Russ Feingold (D-WI) makes his concession speech to his supporters Tuesday in Middleton, Wis., after losing to Republican challenger Ron Johnson for the Wisconsin U.S. Senate seat. Joe Koshollek/AP hide caption

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The 60 Plus Association attacks U.S. Rep. Allen Boyd in one of its ads. The group is part of a tightly woven network behind a slew of campaign ads this fall. hide caption

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