If Republicans decide they are tired of losing elections they should be winning, Herschel Walker’s loss to Raphael Warnock in Georgia’s Senate runoff election should mark the definitive and unequivocal end of the Trump era. Republicans have grown complacent and comfortable on a bed of final straws with Trump, but Walker’s loss should wake them up from their slumber. Republicans can write that obituary in any number of ways. After completing their swearing in ceremonies in 2023, in which they will pledge to “defend the Constitution of the United States,” House Republicans could pass a resolution saying they really mean...