TRENTON - Polls are open for the New Jersey primary election.

Voters have until 8 p.m. Tuesday to select the candidates who will run in the November election.

The race for governor has already started, at least in the form of TV commercials, because Republican Gov. Chris Christie and Democratic state Sen. Barbara Buono face only token opposition.

Christie voted with his wife and 20-year-old son in Mendham. Buono promised a spirited campaign on issues after she voted in Metuchen Tuesday.

All 120 seats in the Legislature are also up for election.

Longtime senator Nia Gill is being challenged in Tuesday's primary by Mark Alexander in the 34th District, a Democrat-dominated area including Montclair, Orange and East Orange.

Overall, six senators and 11 members of the Assembly face primary challenges. But the race between Gill and Alexander is one of the few that are expected to be competitive.

Another is in the 20th District in Elizabeth, where Donna Obe is challenging Raymond Lesniak.

Several mayoral races are also on the ballot, including Edison, East Orange, Plainfield and Atlantic City.

News 12 New Jersey will have complete coverage of the primary elections all day long.