FILE - In this Aug. 14, 2012, file photo, Arizona Republican Senate candidate and current Rep. Jeff Flake, R-Ariz., who is also running for retiring Sen. Jon Kyl's, R-Arizona, seat smi

 

              FILE - In this Aug. 14, 2012, file photo, Arizona Republican Senate candidate and current Rep. Jeff Flake, R-Ariz., who is also running for retiring Sen. Jon Kyl
FILE - In this Aug. 14, 2012, file photo, Arizona Republican Senate candidate and current Rep. Jeff Flake, R-Ariz., who is also running for retiring Sen. Jon Kyl's, R-Arizona, seat smiles after attending a candidates forum Tuesday, Aug. 14, 2012, in Phoenix. Arizona voters have now seen Richard Carmona in combat fatigues, in a surgeon’s mask and gown, wielding a pistol as a swat team member and most recently dangling from a helicopter during a medical rescue. They’ve also seen him described as President Barack Obama’s personal recruit to serve as the next U.S. senator from Arizona. “Richard Carmona, Barack Obama’s rubberstamp,” says a recent ad from Republican nominee Jeff Flake. (AP Photo/Ross D. Franklin)