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New Jersey state legislative election results, 2025
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The sections below contain analysis of election results in the state legislative elections for New Jersey in 2025.
General election results
General Assembly
Retiring incumbents
General Assembly
Four incumbents did not file for re-election in 2025.[1] The average number of Assembly incumbents who did not run for re-election in each election between 2011 and 2023 was 6.9. Those incumbents were:
Primary election competitiveness
This section contains data on state legislative primary election competitiveness in New Jersey. These totals include data from all regularly-scheduled House and Senate elections. For more information about Ballotpedia's competitiveness analysis of state legislative elections, please click here.
| New Jersey state legislative competitiveness, 2011-2025 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Year | Districts/ offices |
Seats | Open seats | Candidates | Possible primaries | Contested Democratic primaries | Contested Republican primaries | % of contested primaries | Incumbents in contested primaries | % of incumbents in contested primaries | ||||
| 2025 | 40 | 80 | 4 | 202 | 80 | 23 | 6 | 36.3% | 35 | 46.1% | ||||
| 2023 | 80 | 120 | 28 | 260 | 160 | 12 | 9 | 13.1% | 17 | 18.3% | ||||
| 2021 | 80 | 120 | 12 | 176 | 160 | 9 | 3 | 7.5% | 10 | 12.0% | ||||
| 2019 | 40 | 80 | 4 | 178 | 80 | 13 | 3 | 20.0% | 25 | 32.9% | ||||
| 2017 | 80 | 120 | 13 | 272 | 160 | 14 | 11 | 15.6% | 26 | 24.3% | ||||
| 2015 | 40 | 80 | 7 | 171 | 80 | 3 | 2 | 6.3% | 7 | 9.6% | ||||
| 2013 | 80 | 120 | 6 | 268 | 160 | 9 | 11 | 12.5% | 17 | 14.9% | ||||
| 2011 | 80 | 120 | 15 | 269 | 160 | 11 | 14 | 15.6% | 18 | 17.0% | ||||
Post-filing deadline analysis
The following analysis covers all state legislative districts up for election in New Jersey in 2025. Information below was calculated on April 14, 2025, and may differ from information shown in the table above due to candidate replacements and withdrawals after that time.
New Jersey had 29 contested state legislative primaries in 2025, more than in any year since 2011 and an increase of 38% from the preceding cycle.
Twenty-two of the 29 contested primaries were for Democrats, 83% more than the 12 Democratic primaries in 2023. Seven primaries were for Republicans, 22% down from nine in 2023.
More New Jersey state legislative incumbents faced primary challengers in 2025 than in any cycle since Ballotpedia began tracking the state’s competitiveness figures in 2011.
Thirty-three incumbents faced primaries in 2025, representing 43% of the 76 incumbents who ran for re-election. This was a new high, with 2019 being the second highest at 33% of incumbents in contested primaries. Of the 33 incumbents who faced primary challengers in 2025, 29 were Democrats and four were Republicans.
A total of 202 major party candidates filed to run—119 Democrats and 83 Republicans. Four of the 80 seats up for election were open, meaning no incumbents filed. That tied 2019 for the fewest open seats since 2011. The average number of open seats each cycle since 2011 was 12.
General Assembly
The table below shows the number and percentage of open seats in the New Jersey General Assembly from 2010 to 2025.[2]
| Open seats in New Jersey General Assembly elections: 2011 - 2025 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Year | Seats up | Open seats | Incumbents running | |||||||||||
| # | % | # | % | |||||||||||
| 2025 | 80 | 4 | 5% | 76 | 95% | |||||||||
| 2023 | 80 | 20 | 25% | 60 | 75% | |||||||||
| 2021 | 80 | 8 | 10% | 72 | 90% | |||||||||
| 2019 | 80 | 4 | 5% | 76 | 95% | |||||||||
| 2017 | 80 | 8 | 10% | 72 | 90% | |||||||||
| 2015 | 80 | 7 | 9% | 73 | 91% | |||||||||
| 2013 | 80 | 5 | 6% | 75 | 94% | |||||||||
| 2011 | 80 | 12 | 15% | 68 | 85% | |||||||||
See also
- Elections
- Elections calendar
- Elections by state and year
- State Poll Opening and Closing Times
- State legislative elections, 2025
Footnotes
- ↑ Ballotpedia defines an incumbent as retiring if the incumbent did not file for office or filed for office but withdrew, was disqualified, or otherwise left a race in a manner other than losing the primary, primary runoff, or convention. If an incumbent runs as a write-in candidate, Ballotpedia does not consider them to be retiring. If an incumbent runs in the same chamber for a different seat, Ballotpedia does not consider them to be retiring.
- ↑ Ballotpedia defines a seat as open if the incumbent did not file to run for re-election or filed but withdrew and did not appear on any ballot for his or her seat. If the incumbent withdrew from or did not participate in the primary but later chose to seek re-election to his or her seat as a third party or independent candidate, the seat would not be counted as open. If the incumbent retired or ran for a different seat in the same chamber, his or her original seat would be counted as open unless another incumbent from the same chamber filed to run for that seat, in which case it would not be counted as open due to the presence of an incumbent.
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