Which points out a problem facing Trump and probably-President Biden; regardless which party controls the Senate; the margin is narrow. Even if the Democrats take this Senate next month, the only margin they might have is Kamala Harris as president of the Senate.
That's good for us moderates since it means nothing much is done unless it's bipartisan. The bad news is that nothing much is done. The US is facing several problems, mostly financial and planning for the future. Those issues are not being resolved because of a dysfunctional Congress.