Harris only received five percent of Republican votes — less than the six percent Joe Biden won in 2020 when he beat Trump, as well as the seven percent won by Hillary Clinton in 2016 when she lost to him. While Harris won independents and moderates, she did so by smaller margins than Biden did in 2020.
Meanwhile, Harris lost households earning under $100,000, while Democratic turnout collapsed. Votes are still being counted, but Harris is on pace to underperform Biden’s 2020 totals by millions of votes.
I don’t think you can point to one specific thing that got Biden elected. Covid mismanagement was a huge part of it, but student debt relief and other progressive proposals that Bernie pushed the campaign into played a big part as well. Even with Covid, I think there’s a good chance that Biden would have lost if he’d run the same kind of centrist campaign that Harris and Clinton ran.