Marco Rubio of Florida was participating, it felt at moments like an audition for 2016 -- and Rubio's staff put the video of his questions up on his website with remarkable speed.

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The panel, made up of three politicians and three members of the public, has put forward suggested questions for the referendum.

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And I want to ask you about a couple of questions that came up this week, and I don't - (unintelligible) to put them in the same ball of wax, but Governor Romney, former Governor Romney was asked, if you're in favor of the surge, why aren't your sons in the military.

NPR: Week in Review: Primaries Play Leapfrog