A group of New York voters asked a federal court Monday to reinstate Congressional district maps tossed out by state judges last week because they were gerrymandered to favor Democrats.

The lawsuit, filed in Manhattan, argued that even if those maps were unconstitutional, as state appeals judges found, it is too late to draft new ones.

The plaintiffs pointed to a federal court order from 10 years ago that set New York’s congressional primaries on the fourth Tuesday in June, in order to make sure military and overseas voters had ample time to receive and return mail ballots.

A state judge last week ordered the state’s congressional and state Senate primaries delayed until Aug. 23 in order for new maps to be drawn, from their previously scheduled date of June 28.

The suit said that kind of delay isn’t allowed under the 2012 court order. Therefore, it said, there’s no time for a new map-drawing process, which has been given over to a single researcher, and the court must reinstate original maps drawn by the state Legislature.

“New York’s decision to wait several more weeks before adopting a new congressional plan as its federally mandated June 28 primary rapidly approaches is untenable,” the lawsuit says. “The state has an obligation to redistrict in a timely manner. Since it has failed to do so, this court must act.”

The plaintiffs were represented by Democratic attorney Marc Elias, who has pursued lawsuits over redistricting maps in other states.