Only 18 percent of Oklahomans were registered as Republicans at the time .
Henry Bellmon won election as Oklahoma 's first Republican governor in 1962 , by appealing to Democratic voters and as an anti-corruption candidate .
Only 18 percent of Oklahoma were registered as Republican at the time .
Henry Bellmon won election as Oklahoma 's first Republican governor in 1962 , by appealing to Democratic voters and as an anti-corruption candidate .