0Rick Santorum vs. Mitt RomneyThings have taken a turn south since Rick Santorum endorsed Mitt Romney in 2008. Santorum said he had run in a district that was 'more Democrat than Massachusetts' in the same year that Romney challenged Ted Kennedy’s for his Senate seat.Updated Apr. 24, 2017 12:38PM EDT / Published Jan. 08, 2012 10:02AM EST