When will people wake up?
"Did Santorum HAVE to support Specter over Pro-Life Toomey?"
Yes, because the First Commandment of Politics is "Thou Shalt Not Undercut Incumbents in Your Party's Caucus."
Well since Specter supported Santorum, Santorum was probably a bit uncomfortable stabbing him in the back. Wouldn't you be a bit uncomfortable with that? You should be.