Lots of them did, and do.
Like Brexit this was a close run thing.
Like Brexit time can change perceptions and minds, especially when, inevitably, promises get broken or the consequences of doing them are actually painful.
If the promised repatriation doesn’t happen, as it surely won’t due to legal delays and the refusal of countries to cooperate, then the moaning will start.
If tariffs raise prices and inflation soars, as it will, then the realisation that Biden had actually managed the economy well will sink in.
It only needs a few to make a big difference. They just need to wait 4 years.