Arizona Republican Sen. Kyl Won't Seek Re-Election
Jon Kyl, the second-ranking Republican in the Senate, said at a news conference that it was time to give someone else a shot at the seat he's held since 1994. Kyl is the fifth senator to announce plans to retire after 2012.
Source: http://www.npr.org/2011/02/10/133657280/arizona-republican-sen-kyl-wont-seek-re-election?ft=1&f=1014