Santorum backed Specter in his squeaker of a primary win over a true conservative (who likely could not have won in the general election). Specter, in turn, was pressured to move Bush's SCOTUS picks onto the Court.
Now Santorum is being cut loose.
Santorum made a hard decision that very likely helped get Alito and Roberts onto the Supreme Court. But in doing so he outraged some conservatives for not backing Toomey. And he has NEVER had the support of pedophilia, pot & porn libertarians (thank goodness).
That's why the colorless and brainless Dimocrat embarrassment known as Casey may become the next junior senator from Pennsylvania.
Good analysis. That's what I feared.