New Jersey State Senate seat · lines in effect since 2023
New Jersey Legislative District 21
A district of about 231,000 people, 68% of adults with a bachelor's degree. It votes D+13.6 relative to the nation for president.
2023 election
Nov 7, 2023- Jon Bramnick (R) · won53.5%
- Matt Marino (D)46.5%
Source: New Jersey Division of ElectionsUpdated Sep 30, 2026, 1:01 PM ET
Where it sits among all 40 seats
Every New Jersey State Senate 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
16 races since 1973; the seat changed party 1 time. 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 | |||
| 2023 | Jon Bramnick (R) | Matt Marino (D) | 7.0 |
| Lines first used in 2012 | |||
| 2021 | Jon Bramnick (R) | Joseph Signorello III (D) | 7.3 |
| 2017 | Thomas Kean Jr. (R) | Jill Anne Lazare (D) | 9.4 |
| 2013 | Thomas Kean Jr. (R) | Michael Komondy (D) | 39.2 |
| Lines first used in 2002 | |||
| 2011 | Thomas Kean Jr. (R) | Paul Swanicke (D) | 35.0 |
| 2007 | Thomas Kean Jr. (R) | Gina Genovese (D) | 19.4 |
| 2003 | Thomas Kean Jr. (R) | Francis D. McIntyre (D) | 37.0 |
| Lines first used in 1992 | |||
| 2001 | Richard H. Bagger (R) | Ellen Steinberg (D) | 17.2 |
| 1997 | C. Louis Bassano (R) | — | Unopposed |
| 1993 | C. Louis Bassano (R) | Cathie Perselay Seidman (D) | 30.1 |
| Lines first used in 1982 | |||
| 1991 | C. Louis Bassano (R) | Elly Manov (D) | 43.2 |
| 1987 | C. Louis Bassano (R) | Anthony E. Russo (D) | 7.5 |
| 1983 | C. Louis Bassano (R) | Anthony E. Russo (D) | 1.0 |
| Lines first used in 1972 | |||
| 1981 | C. Louis Bassano (R)Flip | Anthony E. Russo (D) | 3.8 |
| 1977 | John T. Gregorio (D) | Thomas G. Dunn (I) | 14.6 |
| 1973 | Thomas G. Dunn (D) | William G. Palermo Jr. (R) | 28.2 |
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 21
The state's districts in other chambers that share residents with this one, and the share of District 21's area in each.
- New Jersey General Assembly
- LD-21 100%
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+4.8 |
| U.S. Senate | D+1.7 |
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 21.
Higher than 95% of seats.
Lower than 67% of seats.
Lower than 72% of seats.
Lower than 79% of seats.
Higher than 72% of seats.
Less dense than 59% 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 3963% college gradsR+0.3Not up in 2026District 16
68% college gradsD+16.0Not up in 2026District 40
60% college gradsR+5.4Not up in 2026District 14
48% college gradsD+13.0Not 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