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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Dec. 19, 1998: House Minority Leader Dick Gephardt leads other Democrats in a walkout during the impeachment of President Clinton. Democrats argued for the lesser penalty of censure. Sometimes the minority party in the House, frustrated by the rules, uses such demonstrations to get attention its causes. APTN photo hide caption

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Stephanie Herseth Sandlin gets choked up during her concession speech Tuesday in Sioux Falls, S.D. Herseth Sandlin was a leader of the Blue Dog Coalition in the House, which suffered big losses in Tuesday's elections. Devin Wagner/Argus Leader/AP hide caption

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