The Trump campaign announced Wednesday that it has filed a lawsuit against Bucks County, Pennsylvania, accusing officials of suppressing voters.

The campaign’s news release says the Pennsylvania Department of State said voters must be allowed to obtain their mail-in ballots if they were in line by 5 p.m. Tuesday.

However, a video shared online appears to show voters being turned away from county government offices at 2:30 pm.

“This is against the law. This is voter suppression from the left. We will fight for every legal vote in Pennsylvania. Go vote, and stay in line!” the release read.

A culprit in this latest controversy is a law that the Pennsylvania Legislature, then controlled by Republicans, passed in 2019 in an attempt to expand mail-in voting. They created a system for early voting very different than that in most states, where registered voters can go to a vote center in their county and cast a ballot before Election Day.

Instead, in a practice known as “on-demand mail voting,” Pennsylvania voters can show up at their county government offices, request a mail ballot and then fill out an application. That form has to be reviewed to make sure the person is an eligible voter and then approved. Once that happens, a ballot has to be printed.

It’s a process that can take about 12 minutes per voter, if everything goes right. Voters have the option of filling out the ballot on the spot and turning it in, taking it home or asking that it get mailed to their house. If they don’t fill out the ballot right away, they can return it through the Postal Service or place it in a drop box.

An unusually large number of voters on Tuesday opted to request their ballots at county government offices, overwhelming staffers, officials said.

Bucks County has a population of more than 640,000 people and is located north of Philadelphia.

• This article is based in part on wire service reports.