To the list of absolutely crucial wedge issues distinguishing the Republican primary candidates, this week added a new one: What is your position on Donald Trump? In my latest TIME column (subscription required), I look at the latest step in the reality-TV-ification of the Republican primary—Trump’s plan to moderate a GOP debate later this month—and how it reflects the bifurcated race between (for now anyway) “frontrunner” Newt Gingrich and “favorite” Mitt Romney. Gingrich and Romney’s responses to the debate offer showed the difference between their style and their political positioning. Gingrich accepted almost instantly, seeming to relish what a hoot...