Democratic U.S. Sen. Tammy Baldwin, who worked behind the scenes to land the convention in Wisconsin, called the allegations “serious.”

“Everyone working to make this convention a success deserves a leadership team of unquestioned integrity,” she said in a statement before the firings.

Controversy in NJ

Alonso was fired less than a week after he was involved with a controversy in his home state of New Jersey, where both he and Gilbert are top-ranking Democratic operatives.

Julie Roginsky, a former consultant to New Jersey Gov. Phil Murphy, said his 2017 campaign was a “hotbed of toxicity” and she experienced “rank misogyny.” She did not specifically name Alonso, who worked on the campaign, but said the campaign manager had used a vulgarity toward her. He denied it but said he had cursed at her and apologized.

The governor’s office disagreed with Roginsky and said her comments stemmed from strategic differences.

Roginsky also alleged that Alonso tried to use his ties to the governor to generate business from lobbyists for his personal consulting firm.

Alonso denied the claims in an email to the Milwaukee Journal Sentinel.