Democrat Arnold Drucker, a trustee at Nassau Community College, defeated Republican Louis Imbroto, an attorney at Nassau University Medical Center, in a special election Tuesday to fill the seat of the late Nassau Legis. Judith Jacobs.

Drucker will serve the final year of Jacobs’ term in the 16th District and will need to run again next fall for a full two-year term.

Jacobs, a Democrat who represented the heavily Democratic district since the legislature’s creation in 1996, died Sept. 13. Republicans hold an 11-7 majority in the county legislature.

“I’m certainly honored and thankful for the voters in my district for having the confidence in my ability to carry on the legacy of Judy Jacobs who was an institution and an icon in Nassau County,” said Drucker. “I’m driven to be a kind of legislator who will make Judy Jacobs proud.”

During the five-week campaign, Drucker, 59, of Plainview, an attorney and first-time candidate, focused on ethics reform in the wake of the arrests last month of County Executive Edward Mangano, his wife Linda and Oyster Bay Town Supervisor John Venditto on federal corruption charges in connection to their dealings with a Bethpage restaurateur. Each has pleaded not guilty.

Imbroto, 32, of Plainview, who works in the legal department of NUMC and previously was an assistant town attorney in the Town of Oyster Bay, campaigned on the need to hold down property taxes and increase funding to fight heroin abuse.

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Imbroto ran unsuccessfully against Jacobs in 2013 and lost to Assemb. Charles Lavine (D-Glen Cove) in 2012 and 2014.

Drucker, who was appointed to NCC’s board in 2013 by Gov. Andrew M. Cuomo and was a co-chair of the college’s presidential search committee, has said he will step down from the board.

In other races:

Anthony D’Esposito, 34, of Island Park, defeated Douglas Mayer, 54, of East Rockaway, in a special election in the Town of Hempstead’s 4th District seat.

D’Esposito was appointed to the Town Council in February to fill the seat vacated by Anthony Santino, who was elected town supervisor. The winner must run for a new four-year term next year.

Amber Williams, a Republican, defeated incumbent Mary Dudley, a Democrat, to win a seat on Shelter Island’s Town board. Dudley was appointed to the board in January.

Republican Robert Murphy defeated Justin Smiloff to complete the unexpired term of Smithtown Highway Superintendent Glenn Jorgensen, who resigned last year after pleading guilty to misconduct charges. Murphy was appointed to the post in February.

Residents in East Hampton, Shelter Island, Southampton, Riverhead and Southold towns all approved a proposition extending, until 2050, the real estate transfer tax imposed to benefit the Town Community Preservation Fund, and to allow as much as 20 percent of those funds to go toward water quality improvement projects.

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Voters in Riverhead also rejected a proposition to would approve a local law increasing the term of the town supervisor from two years to four years.

With Valerie Bauman