He can read the handwriting on the wall, that says "Mittsy the Shittsy is a loser and he doesn't want to run with someone whose religion doesn't get along with his religion!

After a 17 point loss in the Pennsylvania Senate seat, and a 3rd place finish (presumed) in the Presidential Primaries, he'll be finished.

And this is America--the land of second acts.

Dick "You won't have Dick Nixon to kick around anymore" Nixon is the most notable case. The most recent is Jack Abramoff. Both Republicans, too!

Never say never, that's how most people with the ego to run for office in the first place see it.

he is priming up for Jeb later this summer.

Remember, you climbed into the parallel universe where Rectorum is trying to play spoiler. I don't think he's thinking about being a veep or 2016...he's definitely living in the "now" and trying to make this ego trip last just a little longer. Soon it will be over but he's been able to ride his clown car farther than his critics thought and for him that's the "victory".