The December 31 issue of National Review — the last one before the Iowa caucuses — will feature a cover of Newt Gingrich appearing as “Marvin the Martian,” which some of have suggested could be one of the most memorable covers of the bi-weekly magazine. The cover story is the latest in a series of eyebrow-raising moves by the magazine, often considered to be the gold standard for periodicals in conservative politics. On Wednesday afternoon, its editorial page came out vehemently against Gingrich, warning his nomination would place the White House out of reach for the GOP. Mark Steyn, one...