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Rubio . . ., Cruz and Christie are the best debaters among the establishment candidates. If they are going to get a chance to knock out Trump and Carson, however, the GOP bosses have to dump the undercard now and get the top five or six contenders on the same stage in Reno.

I agree, except that it should not be the place of the "GOP bosses" to dump Trump. Trump and Cruz are both more than acceptable (with Cruz exceptional), and they, with Carson, are the only viable candidates who are acceptable. Christie and Rubio are potentially competitive but completely unacceptable, and the rest are both unacceptable and non-competitive.