An election worker opens envelopes containing vote-by-mail ballots for the August 4 Washington state primary at King County Elections in Renton, Washington on August 3, 2020.A sign explaining signature verification is pictured as vote-by-mail ballots for the August 4 Washington state primary are processed at King County Elections in Renton, Washington on August 3, 2020./Credit: Jason Redman/AFP/Getty Images
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Postmarks come under scrutiny as states prepare for mail-in voting
States are bracing for controversy as they work to ensure that Postal Service postmarks and other tracking will back efforts to prove mail-in votes are sent on time. They're seeking to avoid lawsuits and other issues about unclear markings that have dogged some primaries and could mar ballot counts come Election Day.
