By Bob Brigham Republicans are spending big to try and shore up an incumbent governor facing re-election in a reliably red state. “Oklahoma Governor Kevin Stitt was supposed to cruise to re-election,” Eric Cortellessa reported for Time magazine. “Yet the Republican Governors Association has just released a seven-figure ad buy to help Stitt over the finish line. And prominent Republicans like Florida Governor Ron DeSantis and Sen. Ted Cruz of Texas are rushing to his side, as party leaders fear Oklahoma might be the site of one of the biggest upsets of the midterms.” Joy Hofmeister, the superin…