Trip Gabriel for the NYT:

“Hello, Elections.”

“Hello, Elections.”

“Hello, Elections.”

The rapid-fire calls were pouring in to Marybeth Kuznik, the one-woman Elections Department of Armstrong County, a few days before Election Day. “This is crazy,” she told an anxious caller. “Crazy, crazy, crazy. It’s a good thing because everybody should vote,” she added, “but it’s just crazy.”

Armstrong County, northeast of Pittsburgh, is one of Pennsylvania’s smaller counties with 44,829 registered voters. But it is a microcosm of the high tension, confusion and deep uncertainty that have accompanied the broad expansion of mail-in voting this year, during an election of passionate intensity.

With all Pennsylvania voters eligible for the first time to vote by mail, more than three million ballots were requested statewide — nearly half the total turnout from 2016. One in five voters in Armstrong County requested a mail-in ballot.

A complicated two-envelope ballot, uncertainty over the reliability of the Postal Service and a glitchy online system for tracking returned votes have caused Ms. Kuznik to be bombarded by callers. And, though to a lesser extent, she has also been visited by a stream of walk-ins at her small second-floor office in the county administration building, where an American flag was stuck into a dying plant above her desk.