Rick Santorum on Mitt Romney

"Mitt Romney is the worst Republican in the country to put up against Barack Obama.” 

"You win by giving people the opportunity to see a different vision for our country, not someone who's just going to be a little different than the person in there. If you're going to be a little different, we might as well stay with what we have instead of taking a risk with what may be the Etch A Sketch candidate of the future."  

"It really has to do with what your principles and what your core is. I have a core.... And that's a sharp contrast with Mitt Romney, who was for RomneyCare.... this is someone who doesn't have a core. He's been on both sides of almost every single issue in the past ten years."

"On so many fronts, there could be no person in this country we could nominate who would be any worse on taking on Barack Obama on the most important issue of the day, ObamaCare, than Gov. Romney. And it's the equivalent of malpractice to nominate someone who gives away the most important issue in this race." 

"We'll have a Wall Street banker going up against the president of the United States -- not the best matchup for us."

"I don't know of one group of people that's more disliked than politicians -- it may be the folks who gave us the Wall Street bailout. And that's where Mitt Romney comes from"

"Gov. Romney has a career as an investment banker and someone who's a private equity guy on Wall Street. I'm not too sure that necessarily commends you well to be president of the United States. "