Rules in several key states don't allow election workers to begin processing or counting mail-in ballots until Election Day, so the winners may not be declared for days.
College students who are studying remotely can vote in the state where their college is located. But this is controversial in some places, and students are organizing.
An unprecedented number of Americans have already cast their ballots in the 2020 election. But legal fights and other concerns are making some people nervous about Election Day and beyond.
NPR's Scott Simon speaks with Roxanna Moritz, Elections Commissioner for Scott County, Iowa, about in-person voting in a state where coronavirus infection numbers are rising.
The mark set Friday by Texas, with its 38 electoral votes, also comes on the last day of early voting in the state. Texas, once a reliably red state, is seen as a "toss-up" heading into Election Day.