A quick follow-up to my post about Bob Bennett, and how he'll behave if he loses his seat to a Republican this spring:
In case you're wondering, John McCain's primary isn't until August 24. I can confidently predict that following that primary, win or lose, his voting record will not be significantly to the left of Bernie Sanders or significantly to the right of Jim DeMint. Beyond that, you're guess is as good as mine.
Whichever way he lands, it will be pretty late in the Congress, so it's unlikely to matter much.