A surprise slate of write-in candidates in the Village of Old Westbury claimed two board of trustee seats, while the results of a third race are under review.

Challengers Marina Chimerine and Cory Baker appeared to defeat incumbent trustees Harvey Simpson and Christopher Sauvigne, according to Mayor Fred Carillo. Chimerine, an attorney, won a 1-year term, beating Sauvigne, who was appointed to the board last year. Baker, an anesthesiologist, and incumbent Andrew Weinberg, also appointed to the board last year, received the most votes in the race for two at-large, four-year terms.

Leslie Fastenberg, a critic of the current administration who formed the write-in slate about a week before Tuesday's election, trailed Weinberg by three votes. Ballots are to be recounted next week, village officials said. Fastenberg said officials should count ballots that wrote her name, but put it in boxes not designated for a write-in candidate. Village officials said they would reject those ballots.

StoryVillage elections: See who won

The write-in candidates said officials should be more transparent about issues in the village. The challengers said they plan to review the budget, litigation and salaries for the village's police force. The village should upgrade its website and reach out to residents more often and through social media, Chimerine said.

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Fastenberg said the challengers, called the New Voice of Old Westbury, used Facebook to attract supporters. "We tapped very gently and hit into a geyser of dissatisfaction," she said.

Village elections held Tuesday upended the power structure of several North Hempstead villages. The second time was the charm for insurgents in Great Neck, who ousted the mayor and two trustees after falling short as write-in candidates in 2013.

Results of the Manorhaven election won't be determined until votes are recounted next week. The voting machines have been impounded by the Nassau County Board of Elections with five ballots in dispute and three candidates are separated by four votes.

Manorhaven Village Clerk-Treasurer Leslie Gross said the votes are to be recounted at the Nassau County Board of Elections on Tuesday.