Congressional Upsets Photo Gallery In this combination of Associated Press file photos Attorney General Martha Coakley, left, concedes after losing a special election held to fill the U.S. Senate seat made vacant by the death of Sen. Edward Kennedy, while, State Sen. Scott Brown, R-Wrentham, right, celebrates his win, Tuesday, Jan. 19, 2010, in Boston. The upset ended the Democrats' super majority in the Senate. (AP Photo/File)
AP Photo/File
Congressional Upsets Photo Gallery In this combination of Associated Press file photos Sen. George Allen, R-Va., left, concedes in Alexandria, Va. Thursday, Nov. 9, 2006, and right, Jim Webb, D-Va., gestures during remarks at an election night event Tuesday, Nov. 7, 2006 in Vienna, Va. Allen, then considered a potential 2008 presidential candidate, lost to former Navy Secretary Jim Webb by less than 10,000 votes. (AP Photo/File)
AP Photo/File
This combination of Associated Press file photos shows, left, Jim Leach, R-Iowa, on Capitol Hill, Wednesday, Feb. 15, 2006, and right, an undated photo of U.S. Rep. Dave Loebsack. In 2006, fifteen-term incumbent Jim Leach was beaten by Dave Loebsack in the Iowa U.S. House race. (AP Photo/File)
AP Photo/File
Congressional Upsets Photo Gallery In this combination of Associated Press file photos former U.S. Attorney Dick Thornburgh, left, ponders a question during an interview on Oct. 28. 2003, in San Francisco and U.S. Sen Harris Wofford, right, smiles at the Democratic National Convention July 15, 1992, in New York. In 1991 Wofford came from more than 40 points behind to defeat former Pennsylvania Gov. Dick Thornburgh to hold onto a senate seat he was appointed to after the death of Sen. John Heinz in a plane crash. (AP Photo/File)
AP Photo/File
Congressional Upsets Photo Gallery This combination of Associated Press file photos made available by the Library of Congress, shows, left, Emanuel Cellar and right, Elizabeth Holtzman. In 1972, New York district attorney Elizabeth Holtzman upset 50-year incumbent Emanuel Cellar, then chairman of the House Judiciary Committee and the House's longest serving member. (AP Photo/File)
