Coburn wins Okla. Senate primary

Oklahoma is one of only a few states with open Senate seats this year, and Democrats are confident Carson can win in November despite the state's GOP leanings.

Carson was the front-runner in a five-candidate Democratic field that included beleaguered insurance commissioner Carroll Fisher, who is fighting criminal charges and an impeachment inquiry over his handling of state funds and a charity.

Coburn, a doctor, saw patients in his Muskogee office Monday before meeting with a group of home-schoolers who have been knocking on doors on his behalf. Humphreys appeared at a breakfast before returning to his Oklahoma City headquarters to talk to volunteers.

Bob Anthony, the state's corporation commissioner, had been running a distant third, ahead of a little-known candidate, but was hoping attacks between Coburn and Humphreys would work to his advantage.

For the most part, candidates ran positive ads in the past few days after weeks of commercials in which Anthony questioned Humphreys' land transactions and Humphreys blasted Coburn's congressional voting record.