Exactly, they sure do.
Btw, SoCons all tend to be FiCons. (Think Rubio, Pence, Kasich, etc..)
On the other hand, FiCons don’t all tend to be SoCons. (Think Willard -minus RomneyCare, massive business taxes, and hundreds of millions in MA fees raised-, Rudy, Charlie, etc..)
"Tend," perhaps, but there are exceptions and Santorum is one of them.
We need not look beyond his own introduction of and votes for a half-billion dollar addition to the already $900 million Amtrak budget. That's not the work of a fiscal conservative.
(Reference: Santorum amendment to Transportation funding bill; Bill S.Amdt.3015 to S.Con.Res.83 ; vote number 2006-052 on Mar 15, 2006)
Santorum even cut a TV ad in 2006 saying criticism of that action showed he was a middle-of-the-road kind of guy.