I Guess with your logic Sarah should support Charlie Crist, he is a Republican right..let’s all hop aboard the Charlie Crist train, he is a Republican right
First, being governor is different from being a legislator. I suppose it could happen that in that case there could be a RAT more conservative than the Republican but that is highly unlikely.
Secondly, if you're talking about a primary, I have no idea who would be the most conservative but after that, then the Republican is probably the better choice.
But in the case of a legislator, NEVER, NEVER vote for a RAT. They're going to end up voting for the likes of Pelosi and Reid. You can take this to the bank.