Both held rallies in North Carolina, while Harris also spoke to supporters in Georgia, another of the seven swing states seen as the keys to victory in an otherwise dead-even nationwide contest. Trump added in a stop in Virginia.The rounds of high-stakes speeches before thousands of people at each stop continue Sunday when Harris holds multiple events in the swing state of Michigan and Trump rallies with supporters in Georgia, North Carolina and Pennsylvania.Most polls show Trump, 78, and Harris, 60, within the margin of error from each other across the swing states.However, there was a…