John DiMaio is a Republican Assembly Member representing New Jersey's 23rd Legislative District, which includes parts of Hunterdon, Somerset, and Warren counties. Born on November 27, 1955, he is a lifelong resident of Hackettstown, New Jersey, where he owns A. DiMaio and Son Inc., a general contracting business. He has served in the New Jersey General Assembly since March 2009, when he was appointed to fill a vacancy, and was reelected multiple times, including strong performances such as receiving 46,020 votes in a recent election. Notable leadership roles include Minority Leader since January 2022, co-chair of the Republican Conference , and Budget Officer . He currently serves on the State House Commission .

Education and Political Experience

• Early Political Career: First elected at age 23, served as Hackettstown Councilman and Mayor ; President of the New Jersey Conference of Mayors in 1999.
• County Service: Warren County Freeholder , serving as Director in 2001 and 2008.
• State Assembly: Appointed March 16, 2009; initially assigned to Agriculture and Natural Resources Committee and Telecommunications and Utilities Committee. Reelected in June 2009 primary and general election alongside Erik Peterson. Represents District 23 with Senator Doug Steinhardt and Assemblyman Erik Peterson in the 2024-2025 session.