Utah Attorney General Mark Shurtleff (R) inadvertently confirmed on Twitter this afternoon that he'll challenge Sen. Bob Bennett (R-UT) in 2010.
Apparently thinking that he was sending a private text message, Shurtleff posted that he would be making an official announcement soon, and that he could raise significant amounts of money in Utah, California, New York, Arizona and Texas.
The Salt Lake Tribune said Shurtleff planned to announce his candidacy on May 20.