New Jersey General Assembly seat · lines in effect since 2023
New Jersey Legislative District 23
A district of about 241,000 people, 45% of adults with a bachelor's degree. It votes R+9.1 relative to the nation for president.
2025 election
Nov 4, 2025- John DiMaio (R) · won27.2%
- Erik Peterson (R) · won26.1%
- Tyler Powell (D)23.6%
- Guy Citron (D)23.1%
Source: New Jersey Division of ElectionsUpdated Sep 30, 2026, 1:01 PM ET
Where it sits among all 40 seats
Every New Jersey General Assembly seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every election for this seat
28 races since 1973. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2023 | |||
| 2025 | John DiMaio · Erik Peterson (R) | Tyler Powell (D) | 2.5 |
| 2023 | John DiMaio · Erik Peterson (R) | Tyler Powell (D) | 7.8 |
| Lines first used in 2012 | |||
| 2021 | John DiMaio · Erik Peterson (R) | Hope Kaufman (D) | 9.9 |
| 2019 | John DiMaio · Erik Peterson (R) | Denise T. King (D) | 10.1 |
| 2017 | John DiMaio · Erik Peterson (R) | Laura Shaw (D) | 6.8 |
| 2015 | John DiMaio · Erik Peterson (R) | Maria Rodriguez (D) | 12.9 |
| 2013 | Erik Peterson · John DiMaio (R) | John Valentine (D) | 16.7 |
| Lines first used in 2002 | |||
| 2011 | John DiMaio · Erik Peterson (R) | Karen Carroll (D) | 11.3 |
| 2009 | John DiMaio · Erik Peterson (R) | William J. Courtney (D) | 18.7 |
| 2007 | Marcia A. Karrow · Michael J. Doherty (R) | Dominick C. Santini Jr. (D) | 11.3 |
| 2005 | Michael J. Doherty · Marcia A. Karrow (R) | Janice L. Kovach (D) | 8.5 |
| 2003 | Connie Myers · Michael J. Doherty (R) | Brian D. Smith (D) | 10.0 |
| Lines first used in 1992 | |||
| 2001 | Connie Myers · Michael J. Doherty (R) | Rebecca J. Goff (D) | 12.7 |
| 1999 | Leonard Lance · Connie Myers (R) | Thomas E. Palmieri (D) | 15.4 |
| 1997 | Leonard Lance · Connie Myers (R) | Sharon B. Ransavage (D) | 9.9 |
| 1995 | Leonard Lance · Connie Myers (R) | Frank C. Vanhorn (D) | 7.3 |
| 1993 | Garabed Haytaian · Leonard Lance (R) | Edward F. Dragan (D) | 21.2 |
| Lines first used in 1982 | |||
| 1991 | Garabed Haytaian · Leonard Lance (R) | Rosemarie A. Albanese (D) | 14.9 |
| 1989 | William E. Schluter · Dick Kamin (R) | Jane L. Weller (D) | 17.7 |
| 1987 | William E. Schluter · Dick Kamin (R) | Edward J. Boccher (D) | 21.1 |
| 1987 special election | William E. Schluter (R) | George Murtaugh (D) | 50.5 |
| 1985 | Richard Zimmer · Karl Weidel (R) | Richard C. Allen (D) | 28.2 |
| 1983 | Richard Zimmer · Karl Weidel (R) | Barbara J. Macdonald (D) | 17.1 |
| Lines first used in 1972 | |||
| 1981 | Karl Weidel · Richard Zimmer (R) | James H. Knox (D) | 17.3 |
| 1979 | James J. Barry Jr. · Arthur R. Albohn (R) | Rosemarie Totaro (D) | 4.0 |
| 1977 | James J. Barry Jr. · Rosemarie Totaro (REP) | Joseph J. Maraziti (R) | 2.3 |
| 1975 | James J. Barry Jr. · John H. Dorsey (R) | Rosemarie Totaro (D) | 0.6 |
| 1973 | Gordon A. Macinnes · Rosemarie Totaro (D) | John H. Dorsey (R) | 0.9 |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 23
The state's districts in other chambers that share residents with this one, and the share of District 23's area in each.
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2024 | |
|---|---|
| President | D+5.4 |
| U.S. Senate | D+6.3 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 8, 2026, 7:01 PM ET
Who lives here, compared
Grey bars show the spread of all 40 seats. Small marks are other seats in New Jersey. The black marker is District 23.
Higher than 54% of seats.
Higher than 77% of seats.
Lower than 54% of seats.
Lower than 64% of seats.
Higher than 54% of seats.
Less dense than 87% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 2445% college gradsR+18.6Not up in 2026District 13
53% college gradsR+13.5Not up in 2026District 8
42% college gradsD+1.8Not up in 2026District 12
43% college gradsR+23.2Not up in 2026
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET