Rep. Jeff Flake, R-Ariz., will announce Monday that he will run for the U.S. Senate being vacated by Sen. Jon Kyl, a source has told The Arizona Republic.
Flake, who was first elected to Congress in 2000, has long expressed interest in running for the Senate. He will make it official at an 8 a.m. news conference at the same Phoenix hotel where Kyl on Thursday announced that he will retire when his current term ends in January 2013.
Flake's decision to run for the Senate is sure to rev up Republican competition for his GOP-heavy congressional district. He's also expected to have plenty of competition in the Senate primary.