The 31st District covers Bayonne and part of Jersey City.
More than half of all voters in the district are registered as Democrats, and they outnumber unaffiliated voters. Fewer than 8 percent are registered as Republicans.
The three incumbent Democrats are Sen. Sandra B. Cunningham of Jersey City, and Assembly members Angela V. McKnight of Jersey City and Nicholas Chiaravalloti of Bayonne. All are seeking re-election.
Jersey City resident Herminio Mendoza is the Republican Senate candidate. The Republicans vying for the Assembly are Michael J. Alonso and Lauren Digiaro, both of Bayonne.