As mysteries go, this may not be as compelling as some — say, for instance, how Hillary Clinton’s new political “thriller” of a novel will perpetuate her multi-year grievance tour. Karen will have more on that later, but David Perdue’s sudden swerve into retirement is indeed a bit perplexing. Perdue only narrowly lost his run-off re-election bid to Jon Ossoff, and then only because of a campaign by his own putative allies that ended up suppressing juuuuust enough of his vote to make a difference.