Former President Donald Trump speaks at a campaign rally in Mint Hill, North Carolina on September 25.Brandon Bell/Getty ImagesHurricane Helene battered rural mountain towns in North Carolina, a key voting bloc for Trump.Some analysts and candidates expect turnout to be lower in the region as people rebuild.North Carolina is a critical battleground state, with Trump and Harris polling neck-and-neck.Three weeks after Hurricane Helene ravaged western North Carolina, hundreds of roads and bridges remain damaged or closed and tens of thousands of residents still don't have running water.