Mercer County Executive

Democrat Arthur Sypek Sr. (1917–2002) was the inaugural officeholder of the county executive. A resident of Lawrence Township, he had served in the U.S. Army during World War II, a real estate and insurance agent, member of the Lawrence Township Planning Board, and a Mercer County Freeholder for 16 years.^[10]

In the 1975, Sypek defeated then-Trenton mayor Art Holland in the Democratic primary and S. Harry Sayen, the Mercer County Republican chairman, in the general election.^[4] Sypek was defeated for re-election by Bill Mathesius in 1979 and died on April 23, 2002.^[10]

Republican Wilbur H. "Bill" Mathesius, from Hopewell Township, served three terms from 1980 to 1991.^[11] He was referred as "Wild Bill" during a political career that included stints as Assistant United States Attorney and county prosecutor. ^[11][12]

Mathesius was appointed to the New Jersey Superior Court in 2002^[13][14] and was briefly suspended in 2006 for comments regarding the death penalty.^[15][16][17] In 2008, Governor Jon Corzine declined to reappoint him.^[18] He last presided over a murder trial in which there were irregularities.^[19]

Republican Robert "Bob" Prunetti, served as executive from 1992 to 2004. During his tenure Prunetti sued the Board of Chosen Freeholders in a case which led to a court interpretation as to the rights and responsibilities of the two branches of government.^[5]

As county chief, he collaborated with City of Trenton to develop what became known as the Sun National Bank Center.^[20]

Prunetti was appointed by then-Governor Chris Christie to the Trenton's Capital City Redevelopment Corporation^[21] He later become Chief of the MIDJersey Chamber of Commerce.^[20]

Democrat Brian M. Hughes was first elected in November 2003. He was re-elected in 2007, 2011, 2015, and 2019.^[22][23]

Hughes is a graduate of Thomas Edison State College and a resident of Princeton. He is a member of the notable Hughes-Murphy political family. His father was two-term New Jersey Governor and New Jersey Supreme Court Chief Justice Richard J. Hughes.^[24] His brother, John Hughes, is a serving federal magistrate. His half-brother, Michael Murphy, is an influential lobbyist, former county prosecutor, and a 1997 candidate for governor. His sister-in-law is a Superior Court judge.

Hughes previously served as Deputy Executive Director of the Governor's Council on Alcoholism and Drug Abuse. In 1992 he made an unsuccessful bid to represent New Jersey's 4th congressional district in Congress.^[25] In 1997, was elected to the Board of Chosen Freeholders and served two terms, including one as Freeholder President.^[26] In 2014, he was elected the first Vice President of the County Executives of America (CEA).^[27]

Democrat Daniel R. Benson is life-long resident of Hamilton. He was elected in November 2023, after Hughes dropped his re-election bid earlier that year after Benson defeated him at the Mercer County Democratic Convention.^[28]

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