In essense, this is similar to what political candidates do when the "Swiftboat" (or IAFF) somebody. By finding surrogates who are willing to attack their opponent, these candidates get to keep their hands clean, and stay above the fray. (Of course, they've always been able to do this through quotes -- but now they can embarrass a candidate during a debate and put him on the spot).
I still think Republicans ought to participate in a YouTube debate. But if I were an advisor for one of the frontrunners (who have the most to lose), I'm not sure I'd feel the same way ...
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