WASHINGTON — A judge on Friday blocked a shameless Democrat electoral challenge that sought to disqualify Madison Cawthorn of North Carolina from running for re-election by labeling him an insurrectionist.U.S. District Judge Richard E. Myers II, an appointee of President Donald J. Trump, stepped in to squelch an effort by Democrat lawyers in North Carolina who had filed a motion before the state’s Board of Elections declaring Mr. Cawthorn, 26, ineligible for re-election under the Constitution. They had contended that the first-term Republican’s support for Patriots who entered the Capitol on Jan. 6, 2021, made him an “insurrectionist,” and therefore...