Has Santorum Ever Won The Catholic Vote?

Kilgore studies exit polls from various states:

[B]ased on prior evidence, there’s really no particularly reason to think the “Catholic vote” was ever Santorum’s to lose. His voting base has always been conservative evangelical Protestants, who also make up a high percentage of the voters fixated on making abortion illegal, a particularly strong Santorum demographic. I’m sure the JFK slur didn’t help, but this is one “surprise” in Michigan that really shouldn’t have been that surprising.