They aren't any higher than the last election that Biden won. About one third actually. It's hardly what I'd call sketchy given the context. The US has a lot of voters that are pretty easy to flip and plenty more who probably weren't happy with the last four years. People tend to vote for inflationary policies but against the consequences (or the proxy for them, which is often the president). This election wasn't as close as I expected, but certainly not so far apart to be sketchy.