Why is everyone assuming Portman will the republican primary?
Having learned no lessons from 2014, Democratic blithering about random Republican Senators being primaried is beginning in earnest once again 
I'm not a Democrat dumbass. And Portman being a supporter of gay marriage makes him very vulnerable in a republican primary.
No it doesn't. Who is going to challenge him just because of gay marriage?
Rep. Steve Stivers is supposedly thinking of running. I'm not saying Portman will surely lose the primary but if you don't think it will be an issue among Ohio republicans (Ohio republicans, not Massachusetts republicans), I think you are lying to yourself.
Surely it will be an issue, but Portman is one of the most established Republicans in the country, and on almost every other issue he's a mainline Republican, if not a conservative Republican. Worst case scenario, he wins his primary by Lamar Alexander margins (8-9 points).
