No "Sholom Bayis" in this house, Husband and Wife running against each other for office!

Michelle Schimel

The War of the Roses is erupting on Long Island, where a Nassau County man is set to challenge his estranged wife for state Assembly.

Mark Schimel has been given the Nassau County GOP nomination to seek the Great Neck seat that currently belongs to his estranged wife — Democrat Michelle Schimel.

It’s a move that shocked even his own mother.

“You’re joking,” Irma Schimel said when she learned of her son’s plans by the Daily News.

“This is a really startling thing. It’s a shock. Why would he do this?”

The couple separated about a year ago after 32 years of marriage and two kids — but are not legally divorced.

Irma Schimel said she still considers Michelle her daughter-in-law and even received a Mother’s Day card from her this year.

“I love her very much,” Irma Schimel said. “I can’t believe he’d do a thing like this. I’m going to talk to him.”

Michelle Schimel, 54, is in her third term, having first been elected in 2007 to replace Thomas DiNapoli, who resigned to become state controller.

“He’ll never win anything against Michelle,” Irma Schimel predicted. “They (the voters) love her.”

Mark Schimel did not return a call seeking comment.

Michelle Schimel vowed to run the campaign no differently than her others: “on the issues and on my record.”

A Democratic Party source accused Mark Schimel and the Nassau GOP of “lowering themselves to any level . . . and allowing people’s personal issues to become part of political mudslinging.”

Frank Moroney, the North Hempstead town GOP chairman, admitted there were concerns the race could degenerate into a bitter, personal battle, but insisted the GOP leaders urged him several times to keep it classy.

“One of the things we made clear is we want this to be a very dignified, issue-oriented campaign,”

Moroney said.

“If he wants our continued support he is going to have to keep it that way.”

Mark Schimel was a Republican who changed his registration to Democrat when his wife ran for office, Moroney said. Earlier this year, he switched back to the GOP.

Schimel, according to Moroney, works as an information technology consultant and is very active in the community. He serves on the Great Neck Architectural Review Committee.

“He is a serious candidate,” Moroney said.