The stolen election myth inspired thousands of Trump supporters to take over the Republican Party at the local level, exerting more partisan influence on how elections are run. One of the loudest voices urging Donald Trump’s supporters to push for overturning the presidential election results was Steve Bannon. “We’re on the point of attack,” Bannon, a former Trump adviser and far-right nationalist, pledged on his popular podcast on Jan. 5. “All hell will break loose tomorrow.” The next morning, as thousands massed on the National Mall for a rally that turned into an attack on the Capitol, Bannon fired up...