Like it or not Rick Santorum is the leader of the NOT ROMNEY voters. Which is 70% of us. Rally behind Rick or Romney wins with his 30%
Rick Santorum cannot beat Obama in the general.
Santorum is fading already. He whines and stammers and cannot fight back against Romney. Also, he has no new ideas, and the ideas he has are the usual redistributionist big-government ideas of anybody who spent his time in the Senate (without having accomplished anything during his time there, btw). He supported Arlen Specter and basically supports any of the usual RINO crowd.
He’s a social conservative, but so is Gingrich (anti-abortion, anti-gay marriage), who can defend those positions much more effectively without sounding bitter and priggish.