A general election was held in the U.S. state of New Jersey on November 7, 2017.

All elected offices at the state level were on the ballot in this election cycle, including Governor and Lieutenant Governor for four-year terms, all 80 seats in the New Jersey General Assembly for two-year terms, and all 40 seats in the State Senate for four-year terms.

Prior to the elections, Democrats held a 24–16 majority in the upper house.

Overall, this resulted in Democrats having a net gain of one seat, increasing their majority to 25–15.

Prior to the elections, Democrats held a 52–28 majority in the lower house.