Elections were held in Delaware on Tuesday, November 2, 2010. Primary elections were held on September 14, 2010. Federal Senate The 2010 election for the United States Senate was an open seat special election to finish the term ending in January 2015. Joe Biden, the 36-year Senator from the seat, was reelected to his Senate seat in 2008 and was simultaneously elected Vice President of the United States. He resigned on January 16, 2009 in order to take his seat as Vice President (he was sworn in five days later, on January 20, Inauguration Day). Delaware Governor Ruth Ann Minner announced her intention to appoint Biden's longtime aide and chief of staff Edward E. "Ted" Kaufman on November 24, 2008, and made the appointment the same day Biden resigned. Kaufman was sworn in as a Senator the next day. He made clear that he would not be a candidate for election in 2010. Biden's son Beau Biden, the state Attorney General, considered entering the race but decided not to. Democrat Chris Coons, the county executive of New Castle County, entered the race instead and won the Democratic nomination unopposed. In a widely publicized Republican primary, Michael Castle, the former governor and nine-term U.S. Representative for Delaware's sole congressional seat who was initially heavily favored to win the primary and then the general election, was defeated in an upset by Tea Party movement-aligned marketing consultant Christine O'Donnell. Coons went on to defeat O'Donnell, as well as minor-party candidates Glenn A. Miller (Independent Party of Delaware) and James W. Rash (Libertarian), by a wide margin. House of Representatives John Carney was elected to Delaware's sole seat in the House of Representatives, replacing Republican Mike Castle, who vacated his seat to unsuccessfully run for the Senate. This was one of just three House seats to be picked up by the Democrats; the others were Cedric Richmond in Louisiana's 2nd congressional district and Colleen Hanabusa in Hawaii's 1st congressional district. State Constitutional officers Attorney General Joseph Robinette "Beau" Biden III, son of Vice President Joseph Robinette "Joe" Biden, Jr., cruised to reelection as Delaware Attorney General with no major-party opposition and a commanding 58-point margin of victory. Beau Biden had considered running in the special Senate election held simultaneously with the general election to serve the balance of his father's unexpired Senate term. (His father resigned to become vice president). However, Beau chose to