Take that $10,000 offer to the bank.

Bluefin Labs

An analysis from our partners at Bluefin Labs shows that just under 40 minutes into the ABC News debate in Iowa, 3,400 messages on Twitter were prompted by Mitt Romney's offer to bet with Rick Perry.

That's a relatively high point an hour into the showdown in Iowa.

"You were for individual mandates, my friend," Perry said to Romney, talking about President Obama's health care program. Perry claims that Romney backed individual mandates in a book he wrote.

Romney responded, extending his hand: "You know what - you raised that before. … I tell you what. 10,000 bucks. $10,000 bet."

"I'm not in the betting business," Perry shot back.

Bluefin Labs

The analysts also report that out of 43,000 messages on Twitter, Romney is the most popular subject, with 30 percent. The rest: Gingrich at 22 percent, Bachmann at 19 percent, Paul at 13 percent, Santorum at 10 percent, and Perry at 5 percent.

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