National Democrats investing in Jeff Flake-Richard Carmona race

U.S. Senate candidates Jeff Flake (left) and Richard Carmona. (AP Photos)

Republican congressman Jeff Flake and Democrat Richard Carmona have agreed to three one-hour debates around Arizona this month as they vie for a U.S. Senate seat.

Campaign officials announced Tuesday that the first debate is scheduled for Oct. 10 in Phoenix with the second in Tucson on Oct. 15 and the third in Yuma on Oct. 25.

Carmona and Flake face off in the November general election to succeed retiring Republican Sen. Jon Kyl.

Flake is a six-term congressman. Carmona was surgeon general under President George W. Bush.

The outcome of the widely watched race between Carmona and Flake could determine whether the Senate is controlled by Democrats or Republicans. 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