What's behind the early voting surge? It's more than voter enthusiasm, expert says

Early voting numbers for the U.S. midterm elections have reached nearly 21 million, though experts warn this does not necessarily indicate higher overall turnout. Political scientists suggest the surge is driven by campaign spending and voter mobilization efforts rather than just organic enthusiasm.
Why it matters
Understanding early voting trends is crucial for predicting election outcomes and assessing the effectiveness of modern campaign strategies.
Only on NPR The real reason it's going to take a while to know who won in some midterm races As of Friday morning, nearly 21 million Americans have already cast ballots in the midterm elections, according to the University of Florida's Election Lab, which tracks voting by mail and in person.
But early voting numbers can be misleading. A surge in ballots cast before Election Day doesn't necessarily mean more Americans will vote overall.
That's because many of those voting early would have voted on Election Day anyway, according to Charles Stewart, a political science professor at MIT and founding director of the MIT Election Data and Science Lab.
Stewart told Morning Edition that the increase reflects both voter enthusiasm and the money campaigns are spending to encourage supporters to vote early.
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