Influential conservative commentator Bill Kristol: "Here’s what he should do. He should release the tax returns tomorrow. This is crazy… you’ve got to release 6, 8, 10 years of back tax returns. Take the hit for a day or two. Then give a serious speech on Thursday..."

Robert Bently, the Republican Governor of Alabama: “If you have things to hide, then maybe you’re doing things wrong,” Bentley said. “I think you ought to be willing to release everything to the American people.“

Former Mississippi Gov. Haley Barbour: Asked, “should he release the tax returns,” Barbour quipped, “I would..."

Ana Navarro, a prominent Republican strategist: "I wish he’d hurry up and release more tax returns so this distraction would go away."

MATT DOWD: "There is obviously something because if there was nothing there he would say have it…But I think the bigger thing is, it’s arrogance. Many of these politicians think I can do this, I can get away with this."

GEORGE WILL: "Mitt Romney has said he has released all that’s necessary for people to understand “something” about my finances. Now “something” is a pregnant word… The costs of not releasing the returns are clear, therefore he must have calculated there are higher costs to releasing them."

John Weaver, a veteran Republican strategist: "There is no whining in politics. Stop demanding an apology, release your tax returns."