Thursday's Republican presidential debate in Ames, Iowa featured at least a few testy exchanges. Ron Paul and Rick Santorum sparred over the Iranian threat. Newt Gingrich slapped Fox News moderator Chris Wallace for asking about departures of his campaign staff. And Tim Pawlenty jabbed at Mitt Romney for owning more than one acre of land.

When Pawlenty was asked to defend his phrase 'Obamneycare,' (which he was reluctant to do in the last debate), he was willing to stand by the phrase. But didn't go into any detail about the similarities between the two plans or describe the problems with Massachusetts health care today.

"I don't want to miss that chance again, Chris," said Pawlenty. "Look, Obamacare was patterned after Mitt's plan in Massachusetts. And for Mitt or anyone else to say there aren't substantial similarities or they are not essentially the same plan -- it just isn't credible. So that's why I called it Obamneycare, and I think that's a fair label. I'm happy to call it that again tonight."

The most heated exchange, without a doubt, was the five-minute smackdown between Pawlenty and Michele Bachmann. Via Hot Air, Mediate has the video:

Pawlenty and Bachmann went at it again after Bachmann was asked why she voted for a cigarette tax hike in Minnesota. Bachmann said she only voted for the bill that included the tax increase because it was tied to pro-life legislation. "I made a decision," Bachmann said. "I believe in the sanctity of human life. I believe you can get money wrong, but you can't get life wrong."

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