Retired Air Force Academy law professor, Dan O'Bryant, dropped out of the race to fill Senator Ben Nighthorse Campbell's soon to be open seat.
O'Bryant's decision comes as another Republican says he will be running. Coors Brewery executive Peter Coors is expected to officially announce his candidacy Tuesday.
On Monday, Governor Owens withdrew his endorsement of
former House Representative Bob Schaffer, and threw his support to Coors.
Schaffer says he's disappointed, but not surprised the governor withdrew his support. And he says he forgives Owens for going back on his commitment.
Schaffer and Coors are currently the only Republicans vying for Campbell's seat. Three Democrats are also in the running.