The Senate is not going to be 50/50. It’s going to be 53 or 54 R's to 47 or 46 Democrats,
and that makes Romney even more superfluous than usual. But hey, I am sure that after you shaft the GOP when they are in the minority, they will totally forgive you when they take the majority. The GOP base will totally not primary any senator who fails to make your party pay. And Cocaine Mitch is a forgiving soul. He’s not vindictive at all.