A New York appellate decide on Monday hit the brakes on a sweeping lower-court choice that invalidated newly drawn legislative districts favorable to Democrats and threatened to throw the state’s election season into turmoil.

Justice Stephen Ok. Lindley of New York’s Fourth Appellate Division in Rochester issued the momentary keep after state Democratic leaders formally contested the decrease court docket’s opinion final week that the maps have been unconstitutional and, in some circumstances, gerrymandered for partisan acquire.

He didn’t handle the deserves of the case however indicated that he hoped to expedite his personal ruling on whether or not the traces have been constitutional.

“The enchantment can be vastly accelerated for apparent causes, and I anticipate {that a} choice could possibly be rendered throughout the subsequent three weeks, if not sooner,” Justice Lindley wrote in a observe instructing each Democrats and the Republicans difficult the maps to attend a Thursday listening to.

Within the quick time period, the keep implies that the maps accredited by the Democrat-led Legislature in February, in addition to the state’s June main calendar, will stay in impact. Nevertheless it stays to be seen whether or not the maps will survive the appeals course of.

Analysts usually consider the Appellate Division is extra more likely to defer to the Legislature’s prerogative to attract the maps and fewer more likely to intercede in a manner that will blow up this yr’s elections calendar than was the decrease court docket decide, Patrick F. McAllister, a State Supreme Courtroom justice in rural Steuben County and a Republican.

The end result in New York has attracted intense nationwide curiosity, with partisan management of three to 4 seats within the Home of Representatives hanging within the steadiness at a time when the 2 events are vying for almost all from coast to coast. The New York traces as at the moment construed promise to spice up Home Democrats whereas additionally safeguarding the celebration’s State Senate majority, prompting nationwide Republicans to spend richly on the authorized problem.

Inside New York, the tangled authorized machinations have had a extra speedy impact on candidates for workplace from each events, who’re watching the proceedings rigorously.

Earlier than it was stayed, Justice McAllister’s choice had set campaigns racing to find out what districts — if any — they have been really working in. Candidates who had already spent a month gathering petitions to run within the newly drawn congressional, State Senate and Meeting districts confronted the prospect that the traces can be erased, their pricey work briefly nullified and June’s main elections postponed simply days earlier than the petitioning course of was scheduled to finish.

“On the eve of the petitioning deadline, candidates — incumbents and insurgents alike — have been thrown for a loop,” mentioned Jerry H.​ Goldfeder, an elections lawyer at Stroock & Stroock & Lavan who advises Democratic candidates.

He known as it “an ideal instance of why courts shouldn’t intrude with election procedures on the eleventh hour.”

Although Justice McAllister didn’t explicitly delay the first, his order for lawmakers to redraw new district traces that would win bipartisan assist nearly definitely would have required the first to be rescheduled.

The ruling prompted the State Board of Elections to challenge steering late final week that prematurely mentioned the choice had been stayed and suggested candidates that “all different deadlines offered for by legislation are nonetheless in impact pending additional court docket determinations and the petitions would nonetheless be due this week.”

However after the board posted that steering on Twitter, legal professionals for the Republican plaintiffs mentioned the messages have been spreading misinformation. On Friday, they despatched a cease-and-desist letter demanding that the state take away the Twitter publish until and till there was an precise keep from a decide, which didn’t come till Monday.

John J. Faso, a former Republican congressman aiding the Republican lawsuit, conceded that Justice Lindley’s keep had now clarified the scenario, however he predicted that his aspect would nonetheless prevail within the appeals course of.

“Whereas Democrats need to delay the judicial course of in order that they’ll run one election on these unconstitutional maps, we’re assured the courts will see via that gambit and can order constitutional maps for the 2022 elections,” Mr. Faso mentioned on Monday.

The upper courts might uphold or overturn Justice McAllister’s choice, or they may select an alternative choice: order the maps to be redrawn, however not till after this yr’s election. Such a situation can be more likely to imply that New York would maintain legislative elections in 2022 and once more in 2023.

With that in thoughts, Christine C. Quinn, a high Democratic Get together official, mentioned her recommendation to these looking for workplace was easy and constant: “Folks ought to preserve working, preserve working exhausting, follow the marketing campaign plan that they’d from Day 1.”

She added, “This isn’t uncommon.”