Sen. James M. Inhofe, R-Okla., endorsed a second candidate in another GOP Senate primary, picking Rep. Todd Tiahrt over Rep. Jerry Moran in Kansas’ open-seat Senate race.

Moran and Tiahrt are in a competitive race for the GOP nomination — the winner of that contest in August 2010 is expected to be the next senator from Kansas.

Inhofe announced last week that he was backing former House Speaker Marco Rubio over Gov. Charlie Crist in Florida’s GOP Senate primary.

“There is a real battle going on in Washington, a philosophical battle between [House Speaker] Nancy Pelosi and her Washington liberals, who want to tax and spend this country into deeper recession and mind-numbing debt and a group of conservatives who believe we must stop bailing out Wall Street and start investing again in Main Street,” Inhofe said. “Todd Tiahrt is one of those conservatives.”