Trump has claimed that ballots received afterward should not be counted and filed lawsuits to stop the tab in states where he says observers haven't been given "meaningful access" to guarantee the process is fair.
In states where the margins between Trump and his Democratic rival Joe Biden are particularly close, hundreds of thousands of absentee ballots still rolling in are important to determine the next president of the United States. Some states allow ballots that are postmarked by Nov. 3 to be counted even if they arrive later.
Biden has captured 264 Electoral College votes so far and needs only one more state to surpass the 270 thresholds for a win.
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Military mail-in ballots are predicted to grow past levels in 2016, when the U.S. Election Assistance Commission says more than 252,000 active-duty service members cast absentee votes, according to Military.com.
As of Oct. 22, the U.S. Postal Service reported that about 48,000 absentee military ballots had already been received, compared with 33,000 on the same date in 2016.
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"We won't know the exact number of ballots outstanding, but past elections show the importance of counting these votes,” Jack Noland, research manager at Count Every Hero, an organization centered on guaranteeing military ballots are counted, told The Hill.
“It goes without saying that if the race becomes particularly tight, these ballots could be vital,” he said. “This year -- especially because of the impacts of COVID-19 -- the integrity of the election rests on mail-in votes, including ballots from members of the military, being validated and counted.”
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In Pennsylvania, ballots received within three days after Nov. 3 will still be counted. In North Carolina, ballots can arrive up to nine days after Election Day, no later than 5 p.m. Absentee ballots that are postmarked by Election Day and received no later than seven days after the election will also be counted in Nevada, where Biden has a small lead of fewer than 8,000 votes.
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Meanwhile, Trump is ahead in Georgia by 18,000 votes, North Carolina by 76,000 votes, and Pennsylvania by less than 200,000 votes while counting is ongoing.
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Trump enjoyed a more substantial lead in those states on election night, but it shriveled considerably as absentee ballots from Democratic strongholds began to be counted afterward. Trump has captured 214 electoral college votes so far.