He'll never be a legitimate candidate - ever. He's an embarrassment. He doesn't even offer the most token of opposition. He rarely utters a word during the legislative session unless it's one of his "kitchen table" or "common sense" issues that automatons think are really important as the state plunges further to the left. He can't even feign care for a bedrock issue like abortion. He's nothing.
Congressional seat? He probably thinks that's beneath him. He'd go from being a governor to a nobody in Congress. Senate? Maybe. But why? A legislative body gripped by paralysis.
His career is done after this except with the faux conservative think tanks that do nothing but peddle a "conservative case" for <insert pet liberal cause.>
Surely you jest. 
