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. Challenging for the Assembly are Christopher Munoz of Bayonne, running with Kristen Zadroga-Hart of Jersey City.
Jersey City resident Herminio Mendoza is the Republican Senate candidate. Four Republicans are vying for two Assembly nominations: Michael J. Alonso and Lauren Digiaro, both of Bayonne, comprise one ticket, while Sonia N. Schulman and Neil A. Schulman, both of Jersey City, make up another.