A Montana judge has blocked the state from limiting voter registration on Election Day, concluding the move would disproportionately harm Native American and young voters. The ruling prevents a law that was enacted last year by the Republican-controlled Legislature from being enforced that would have prevented voters from casting ballots in presidential, U.S. Senate and U.S. House races if they register after noon on Election Day. It was the second time in five years that legislators attempted to move away from Election Day registrations. District Judge Adam Larsen’s order, issued late Friday, is to remain in effect through the trial of a lawsuit filed by the Montana Federation of Public Employees, later joined by Native American tribes, including the Blackfeet and Northern Cheyenne. However, the state’s primary elections are June 2, and the trial isn’t until late August.…