A top Wisconsin election official says Trump called him last week urging him to decertify Biden's 2020 election win in the state

• The Wisconsin State Assembly speaker says Donald Trump is still trying to decertify Joe Biden's win.
• Robin Vos told a local outlet Trump raised the topic last week after a court ruled on ballot boxes.

A Wisconsin election official says Donald Trump is still trying to overturn his 2020 electoral defeat in the battleground state.

Robin Vos, the speaker of the Wisconsin State Assembly, said in a Tuesday interview that the former president called him last week and encouraged him to decertify Joe Biden's win in the state — 20 months after the 2020 election.

Vos told WISN-TV 12 News in Milwaukee that Trump broached the topic in the days after the Wisconsin Supreme Court ruled absentee-ballot drop boxes in the state illegal on July 8.

"It's very consistent. He makes his case, which I respect," Vos told the news outlet. "He would like us to do something different in Wisconsin. I explained that it's not allowed under the Constitution."

"He has a different opinion," Vos added.

Vos' story comes in the midst of public hearings from the House select committee investigating the January 6, 2021, insurrection and Trump's efforts to overturn his reelection defeat.

Trump took to Truth Social to air his grievances with Vos.

"Looks like Speaker Robin Vos, a long time professional RINO always looking to guard his flank, will be doing nothing about the amazing Wisconsin Supreme Court decision," the former president wrote, using the insult that stands for "Republican in name only."

"The Democrats would like to sincerely thank Robin, and all of his fellow RINOs, for letting them get away with 'murder,'" he added.

Vos told WISN-TV that the July 10 court decision regarding ballot drop boxes would have an effect on the law moving forward and couldn't be applied retroactively. Vos has voiced support for the court decision and called the drop boxes "illegal."

Trump responded to the interview Tuesday evening, once again urging Vos to act.

"So what's Speaker Robin Vos doing on the Great Wisconsin Supreme Court Ruling declaring hundreds of thousands of Drop Box votes to be illegal?" he wrote. "This is not a time for him to hide, but a time to act!"

Vos and a representative for Trump didn't immediately responded to requests for comment from Insider.

Biden beat Trump by fewer than 21,000 votes in Wisconsin.

In 2021, Trump accused Vos of "working hard to cover up election corruption" after refusing to do a forensic audit on the results of the 2020 election in the state, the Milwaukee Journal Sentinel reported.

Vos eventually began an investigation into the 2020 election in his state.

Vos himself has peddled election conspiracy theories and baselessly claimed that voter fraud in his state influenced the 2020 election.