A member of President-elect Donald Trump’s Michigan election team faces up to five years in prison for election fraud.

Brandon Hall, 27, was found guilty Wednesday of ten counts of election fraud by a Ottawa County jury, as the Grand Haven Tribune reported.

Hall, managing editor of the blog West Michigan Politics, had been called “the core of the Trump team in Michigan” as recently as October by politicscentral.org.

A photo taken in the president-elect’s Lansing campaign headquarters shows Hall alongside other Trump campaign staffers, including Deputy State Director C.J. Galdes and Kevin Tatulyan, director of coalitions.

Hall was reportedly charged with forging signatures on petition forms to get a judicial candidate, Chris Houghtaling, on the ballot in 2012.

Hall did not respond to an emailed request for comment.

Hall is scheduled to be sentenced on December 27, according to the Grand Haven Tribune. He said he plans to appeal.

The Trump staffer’s conviction comes three days after the president-elect sent a tweet making unfounded claims of election fraud in Virginia, New Hampshire, and California. He also made the baseless claim that millions voted illegally.

“Donald Trump has made claim after claim calling the integrity of the election into question, but his Michigan campaign had no problem hiring a staff member facing election law charges,” Lonnie Scott, executive director of Progress Michigan, said in a statement following the guilty verdict. “The fact that the Trump campaign and the Michigan Republican Party embraced Brandon Hall is just one more reason to recount and audit the vote in Michigan.”

Green Party candidate Jill Stein filed a request Wednesday for a recount of Michigan ballots cast in the 2016 presidential election.