Ageneral election was held in theU.S. state ofNew Jersey on November 7, 2017.Primary elections were held on June 6. All elected offices at the state level were on the ballot in this election cycle, includingGovernor andLieutenant Governor for four-year terms, all 80 seats in theNew Jersey General Assembly for two-year terms, and all 40 seats in theState Senate for four-year terms. In addition to the gubernatorial and State Legislative elections, numerouscounty offices andFreeholders in addition tomunicipal offices were up for election. There were two statewide ballot questions and some counties and municipalities also had a local ballot question. Non-partisan local elections, some school board elections, and some fire district elections were also held throughout the year.
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All 40 seats in theNew Jersey Senate 21 seats needed for a majority | |||||||||||||||||||||||||||||||||||||
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 Results by district Democratic hold Democratic gain Republican hold Republican gain | |||||||||||||||||||||||||||||||||||||
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All 40 seats of theNew Jersey Senate were up for election. Prior to the elections, Democrats held a 24–16 majority in the upper house. Democrats picked up an open seat inDistrict 7 and defeated a Republican incumbent inDistrict 11, while Republicans defeated an appointed Democratic incumbent inDistrict 2. Overall, this resulted in Democrats having a net gain of one seat, increasing their majority to 25–15.
| 25 | 15 |
| Democratic | Republican |
| Parties | Candidates | Seats | Popular Vote | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2013 | 2017 | +/- | Strength | Vote | % | Change | |||
| Democratic | 40 | 24 | 25 |  1 | 63% | 1,177,295 | 59.1% | 11.7% | |
| Republican | 37 | 16 | 15 |  1 | 38% | 810,543 | 40.7% | 11.4% | |
| Green | 1 | 0 | 0 |  | 0% | 1,306 | 0.1% | N/A | |
| Libertarian | 1 | 0 | 0 | | 0% | 574 | 0.03% | 0.02% | |
| Independent | 4 | 0 | 0 | | 0% | 2,545 | 0.1% | 0.4% | |
| Total | 83 | 40 | 40 | 0 | 100.0% | 1,992,263 | 100.0% | - | |
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All 80 seats in theNew Jersey General Assembly 41 seats needed for a majority | |||||||||||||||||||||||||||||||||||||
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 Results: Democratic hold Democratic gain Republican hold | |||||||||||||||||||||||||||||||||||||
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All 80 seats of theNew Jersey General Assembly were up for election. Prior to the elections, Democrats held a 52–28 majority in the lower house. Overall, the Democrats increased their majority by 2 to a supermajority at 54–26, thanks to holding all their seats as well as picking up open seats inDistrict 2 andDistrict 16.
| 54 | 26 |
| Democratic | Republican |
| Parties | Candidates | Seats | Popular Vote | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2015 | 2017 | +/- | Strength | Vote | % | Change | |||
| Democratic | 80 | 52 | 54 | 2 | 68% | 2,266,879 | 58.1% | 4.8% | |
| Republican | 78 | 28 | 26 | 2 | 33% | 1,613,865 | 41.4% | 4.5% | |
| Green | 4 | 0 | 0 | | 0% | 4,828 | 0.1% | 0.3% | |
| Libertarian | 4 | 0 | 0 | | 0% | 2,804 | 0.1% | 0.0% | |
| Solidarity | 1 | 0 | 0 | | 0% | 821 | 0.02% | N/A | |
| Independent | 14 | 0 | 0 | | 0% | 13,537 | 0.3% | 0.0% | |
| Total | 181 | 80 | 80 | 0 | 100.0% | 3,902,734 | 100.0% | - | |
Two statewide questions were on the ballot. Both were approved by voters:
Question 1
| Poll source | Date(s) administered | Sample size | Margin of error | Yes Y | No N | Undecided |
|---|---|---|---|---|---|---|
| Stockton University[5] | October 18–24, 2017 | 525 LV | ± 4.3% | 56% | 39% | 5% |
| Stockton University[6] | October 4–12, 2017 | 585 LV | ± 4.1% | 48% | 45% | 6% |
Question 2
| Poll source | Date(s) administered | Sample size | Margin of error | YesY | NoN | Undecided |
|---|---|---|---|---|---|---|
| Stockton University[7] | October 18–24, 2017 | 525 LV | ± 4.3% | 87% | 9% | 4% |
| Stockton University[8] | October 4–12, 2017 | 585 LV | ± 4.1% | 79% | 13% | 8% |
Question 1[9]
| Choice | Votes | % |
|---|---|---|
| YesY | 970,334 | 60.03 |
| NoN | 646,110 | 39.97 |
| Total votes | 1,616,444 | 100 |
Question 2[10]
| Choice | Votes | % |
|---|---|---|
| YesY | 1,093,448 | 69.02 |
| NoN | 490,763 | 30.98 |
| Total votes | 1,584,211 | 100 |
Various county and municipal elections were held simultaneously, including elections for mayor inAtlantic City,Hoboken, andJersey City.
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