There is a lot of speculation about the Republican party’s chances of taking the momentum they have going into November and doing what was once thought unthinkable for this election cycle: flipping the Senate to red. The analyses I read — and I do read a lot of them — that break down how that just might happen all count Sen. Mark Kelly (D-Ariz.) among the most vulnerable. My view from here in my native Arizona is that Kelly probably isn’t sweating too much. Last month, my friend and colleague Stephen Green gave his breakdown regarding the GOP’s Senate takeover...