If you haven’t already*, then get out and vote! Tuesday is the last day, so plan on voting then, if not before. You have a day and a bit more to do your civic duty.
Generally, midterms have about 65% of the main elections, but they are just as important.
*If it were up to me there would only be one day to vote, and the only way to vote absentee would be by prearrangement at least 2 weeks before.