Sen. Hillary Clinton recently challenged Sen. Barack Obama to a debate, which isn't surprising because candidates who are behind always challenge candidates who are ahead to debates.

It may make them look desperate; it may make them look combative.

But there's a twist in Clinton's challenge. She said she wanted a 90-minute, no moderator, Lincoln-Douglas style debate. They could do it on the back of a flat bed truck, she said.

Think she really wants that? Probably not.

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