This is probably a minority opinion, but I don't think the results yesterday are necessarily a referendum on Biden, so Republicans shouldn't feel too smug about the wins. I believe it was actually the Democrat candidates that were the problem. If McAullife didn't say that parents shouldn't have a say in what schools teach he likely wins (CNN kept saying his comments were taken out of context but he doubled down on those comments on Meet the Press). I also think voters didn't appreciate his race baiting tactics either. Murphy surprisingly almost lost (yes, I'm conceding this election) in large part to his handling of the pandemic, in particular the nursing home debacle.
Disagree here. The exit surveys show that the economy was a close second to schools. Virginia has been hit especially hard by the labor, supply shortages and inflation. We can debate the amount of control Biden had over these things (my position is marginal...could have made it better but a lot of it was baked in). While it wasn't a referendum on Biden, Biden and his popularity (or lack there of) certainly did act as an anchor on McAullife. McAullife was brought down by a combination of a bad campaign with bad positions that angered parents, parents anger at the public schools, the fact that it's (still) not over (for which Biden rightly or wrong is getting the blame), and the economy (for which Biden rightly or wrongly is getting the blame)