The candidates for Nassau district attorney Sunday sought to shore up support on the final weekend before the election, with Republican Kate Murray rallying local GOP clubs while Democrat Madeline Singas courted a business group and party activists.

Murray, the Hempstead Town supervisor, led a caravan of supporters to GOP rallies in Elmont, West Hempstead, Garden City and Franklin Square.

"This is all about our voting operation, and we do it better than anyone," Murray told some 100 supporters at the Sand Castle, a banquet hall in Franklin Square.

"This is an off-, off-year election, so I'm counting on each and every one of you to get out and vote," Murray said, underscoring the tight nature of the election that has no state or federal candidates on the ballot Tuesday.

The latest Newsday/News 12/Siena College Poll released Sunday showed a virtual dead heat in the race, with Murray ahead of Singas, the acting Nassau district attorney, by 1 percentage point -- 46 percent to 45 percent, well within the 4.1-point margin of error.

In her bid for Nassau County District Attorney, Hempstead Town Supervisor Kate Murray packs campaign handouts with volunteer Robert Goldmann of North Valley Stream at the Republican headquarters in Franklin Square Saturday, Oct. 31, 2015. Photo Credit: Barry Sloan

Meanwhile, Singas met with prospective voters at a Long Beach Chamber of Commerce dinner at the Sands Atlantic Beach and was scheduled to attend another event Sunday hosted by the North Hempstead Democratic Committee.

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"We've got the momentum going on our side," Singas said, referring to her stronger showing in the new poll numbers compared with a month ago, when she trailed Murray by 6 points.

"This is a moving train and nothing is going to stop this train from moving forward," Singas said in an interview at the event, where she was introduced to chamber members by Assemb. Todd Kaminsky (D-Long Beach).

Earlier in the day, Singas' campaign issued a news release calling on Murray to release her financial disclosure forms. The Singas campaign has sued the Town of Hempstead for not releasing the records under a Freedom of Information Law request filed in March.

"What is she hiding from the public that she won't release these documents?" Singas said in the release.

Acting Nassau County District Attorney Madeline Singas shakes hands with Patrick Payne of Westbury while greeting campaign supporters at the Harvest Diner in Westbury Saturday, Oct. 31, 2015. Photo Credit: Barry Sloan

Murray campaign spokesman Bill Corbett Jr. responded in an email, saying "While heroin deaths in Nassau County have increased by 100 percent, Madeline Singas is focused on partisan attacks."

Town of Hempstead spokesman Mike Deery did not immediately respond to an email seeking a response to Singas.