At this point we can only really guess. It’ll probably be days or weeks before people can dig through the voting data and do substantive post-mortems on the 2024 campaign. Th economy seems to have played a big part. People are angry at high prices and they naturally punish the incumbent party even if the President doesn’t realistically control how much eggs and gas cost. Along with that it’s looking like there was a collapse in Democratic turnout in the Rust Belt while Republican turnout stayed steady, handing Trump narrow wins in Pennsylvania, Wisconsin, and Michigan. It also looks like the Harris campaign’s bet on Republicans who didn’t vote for Trump in the primary breaking for her failed to pay off.