A former advisor to Donald Trump's presidential campaign accused Gov. Scott Walker and Republican National Committee Chair Reince Priebus of rigging multiple elections in Wisconsin.

The Washington, D.C.-based political newspaper The Hill published a column Tuesday written by former Trump advisor Roger Stone.

"As someone with great sentimental attachment to the Republican Party, as I joined as the party of Goldwater, both parties have engaged in voting machine manipulation," Stone wrote. "Nowhere in the country has this been more true than Wisconsin, where there are strong indications that Scott Walker and the Reince Priebus machine rigged as many as five elections including the defeat of a Walker recall election."

Mike Wagner, professor of political science at University of Wisconsin-Madison, said most campaigns would likely denounce such remarks, but Trump’s might not.

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"Donald Trump himself has already said, if I don't win, it may be that this election was rigged," Wagner said. "And so the column from Roger Stone, a former Trump associate, sure makes it sound like this is at least consistent with the Trump message, if not coordinated with the Trump message."

Wagner added there is no evidence Stone's allegations are true.

A spokesman for Walker, who is expected to appear at a Trump rally Tuesday evening in West Bend, did not immediately return a request for comment.