It's easy to throw DeWine's name in there. If he loses, it won't be because the "security moms" didn't support him. He's a very unlikable guy, a meely-mouthed turtle-looking man. As much as I can't stand Sherod Brown, I won't miss DeWine if he loses and if he wins the Ohio Republican party had better come up with a better candidate the next time around.
Unfortunately, the GOP is running several personally unlikable Senators in this election cycle. Senators that seem to be trying to lose the election.
Conrad ("pick a fight with the firefighters") Burns also comes to mind.