UPDATE: Blunt declares 'the fight is in the Senate'

Thursday, February 19, 2009 | 12:12 p.m. CST; updated 6:38 p.m. CST, Thursday, February 19, 2009

ST. LOUIS — Republican U.S. Rep. Roy Blunt announced Thursday he is running the Senate in 2010, declaring he's the strongest in his party to win a seat that he believes is critical to regaining balance in that chamber.