The first major Republican presidential candidate debate Thursday is, for now at least, as much about who won’t be included in the prime-time event as the performance of those who will. Of the 17 contenders, only 10 will participate in the first-tier debate, which will be aired on Fox News, relegating candidates with low poll rankings to a second level event that won’t attract nearly as much attention. But Larry Sabato, director of the University of Virginia’s Center for Politics, asked: “Who would willingly trade a place at the adult debate for the kids table...
