MADISON, Wis. — Wisconsin Attorney General Josh Kaul filed felony forgery charges against two attorneys and an aide who submitted paperwork falsely saying that former President Donald Trump had won the battleground state in 2020.

The charges were filed against Trump attorneys Kenneth Chesebro and Jim Troupis and former Trump aide Mike Roman who allegedly delivered Wisconsin’s fake elector paperwork to a Pennsylvania congressman’s staffer in order to get them to Vice President Mike Pence on Jan. 6, 2021.

All three are due in Dane County Circuit Court on Sept. 19, according to court records.

Kaul, a Democrat, has faced pressure to bring action against the 10 fake electors, who have yet to be charged with any criminal wrongdoing. He has previously suggested that he was relying on federal investigators while also not ruling out a state probe.

Electors are people appointed to represent voters in presidential elections. The winner of the popular vote in each state determines which party’s electors are sent to the Electoral College, which meets in December after the election to certify the outcome.

The fake elector efforts are central to an August federal indictment filed against Trump alleging he tried to overturn results of the 2020 election. Federal prosecutors, investigating his conduct related to the Jan. 6, 2021, U.S. Capitol riot , have also said the scheme originated in Wisconsin. Trump also faces charges in Georgia and has denied wrongdoing.

Michigan and Nevada have also criminally charged fake electors.

The Wisconsin electors, Chesebro and Troup all settled a civil lawsuit that was brought against them last year.

Documents released as part of those settlements showed that the strategy in Wisconsin replicated moves in six other swing states .

Trump lost Wisconsin to Biden, a Democrat, by fewer than 21,000 votes. Trump carried Wisconsin by a similar margin in 2016.

Wisconsin is one of a handful of swing states again this year.

Government and outside investigations have uniformly found there was no evidence of widespread voter fraud that could have swung the 2020 election. But Trump has continued to spread falsehoods about the election, particularly in Wisconsin.