Peter Kinder is certainly capable of blowing a Senate race and Matt Blunt would probably lose by an Akin-level margin.
LOL. Anyway, this speculation is useless considering that neither Blunt nor Kinder (nor Hartzler, for that matter) are going to be the establishment's pick in this race.
I don't see McCaskill getting Blanched in 2018. Missouri's definitely quite Republican-leaning by this point, but it's not Arkansas. She'll be the underdog for sure, but even if she loses fairly badly, I doubt she'll lose by more than 10 or 11.
I tend to agree, but I still think that she will make another Akin-esque gaffe.
People forget how hated Matt Blunt was, there was a reason he didn't run for re-election. As you say though, he won't be the nominee.