Yet Rick Santorum is really the next in line, but honestly the best qualified is Ted Cruz. Either one they hate. So they trot out rinos to test run them. Jeb one day, Christie the next, then Rubio and finally now another run by Slick Mitt.
Santorum is not next in line.
Santorum was booted from the Senate by 17.4% in 2006 and was supporting Arlen Specter in 2010, until he switched parties.