A Montana Republican businessman won the state’s U.S. House seat after being charged with assaulting a reporter on the eve of the election, a victory that may temper Democrats’ hopes for a massive anti-Trump wave next year. […] The chairman of the National Republican Congressional Committee, Rep. Steve Stivers, issued a statement hailing Gianforte’s win, as well as his apology. “Now he needs to resolve his legal issue so that he can start off on the right foot serving his constituents,” Stivers said. […] The assault allegation didn’t seem to faze voters. Shaun Scott, a computer science professor at Carroll...