It's Primary Day in New Jersey!

Stay tuned to Insider NJ's Primary Day War Room tonight for results and updates from around the state.

Polls are open until 8pm.  Check your polling location here.

After considerable pre-election passion, county clerks said turnout appeared low in key areas of the state as of the early afternoon.

There are several key contested primaries in New Jersey on both the Democratic and Republican sides tonight. Take a look at Insider NJ's Primary Elections publication for a deep-dive into the biggest clashes of the cycle.

On the Senate side, Senator Booker is running unopposed for the Democratic nomination for re-election.  Four Republicans are vying for the nomination to challenge Booker in the general election: Alex Zdan, Richard Tabor, Dr. Robert Lebovics, and Justin Murphy.

In CD1, Rep. Norcross is running unopposed in the Democratic primary; Damon Galdo is running unopposed in the Republican primary.

In CD2, four Democratic candidates are vying for the nomination to take on incumbent Republican Rep. Van Drew.  The Democratic candidates are Cape Mayor Mayor Zack Mullock, previous CD2 candidate Tim Alexander, Bayly Winder, and Terri Reese.

• Primary is intensifying as Democrats see a potential pick-up
• Candidates debated

In CD3, three Republicans are fighting for the nomination to challenge Democratic Rep. Conaway: Justin Barbera, Justin Cullen, and Michael McGuire.

In CD4, Rachel Peace and John Blake are running for the Democratic nomination to take on veteran Republican Rep. Chris Smith, who's running unnopposed.

In CD5, Rep. Gottheimer is running unopposed in the Democratic primary; Sean Kirrane is seeking the Republican nomination.

In CD7, four candidates emerged from an initially crowded field to battle for the nomination to take on Republican Rep. Kean in what will be a battleground district in November: Rebecca Bennett, Brian Varela, Michael Roth, and Dr. Tina Shah.  President Trump endorsed Kean, who hasn't been seen in months, on Monday evening, writing on Truth Social that '"Tom Kean has my Complete and Total Endorsement for Re-Election."

• Bennett has emerged as the frontrunner to overcome an onslaught of negative ads
• Democrats scrambled for votes
• Bennett taking seriously the threat of negative ads
• Bennett staring down Shah amid a negative ads
• Kean calling county chairs amid health absence as he confirms he's running for re-election
• Polling shows Bennett leading in the Democratic primary
• Primary race takes nasty turn
• Bennett has emerged as the frontrunner, having raised $3M, outpacing the primary field and Rep. Kean.
• Bennett says GOP is 'terrified' of her going up against Rep. Kean because 'they know I'm going to kick his ass'
• Healthcare is Shah's cornerstone
• Bennett addressed past GOP ties
• Roth, Varela went head-to-head

In CD8, Rep. Menendez faces a challenge from former Jersey City BOE President Mussab Ali in what has become a contentious primary race.  Republicans plan to back an independent candidate, with no one vying for the GOP nomination.

In CD9, two Republican primary candidates are battling for the nomination to take on Democratic Rep. Pou: attorney Tiffany Burress and Clifton Councilwoman Rosie Pino.

In CD10, Rep. McIver faces a first-time primary challenge from Lawrence Poster.  Carmen Bucco is on the ballot in the Republican primary.

In CD11, Democratic Rep. Mejia faces three primary challengers:  Donald Cresitello, Justin Strickland, and Joseph Lewis.  Republican Joe Hathaway, who ran against Mejia in the April special election, is running for the Republican nomination.

In CD12, the Democratic primary race is the most crowded, and tangled, in the state, with over a dozen candidates vying to succeed retiring Rep. Watson Coleman in the deep Democratic district. Gregg Mele is the lone candidate running in the Republican primary.

• Former Senators Torricelli and Bradley endorsed Altman
• Faith leaders endorsed Servance
• Rep. Khanna joined Hamawy for a fireside chat
• Hamawy appears to lead the pack
• Commissioner Robinson launched a TV ad
• Altman protested the conditions at Delaney Hall
• Dr. Wang released a video on gerrymandering
• Former Senator Torricelli campaigned with Altman
• Servance pounded the pavement in North Brunswick
• Hamawy and his team hit the doors in Franklin
• Hamawy addressed 'blind sheikh' past association
• Wang discussed candidacy
• In the final stretch, the candidates debated
• Assemblywoman Reynolds-Jackson made her case
• Commissioner Robinson pointed to government service
• Mayor Cohen spurred young voters in Middlesex County
• Former Assemblywoman Jaffer endorsed Hamawy
• Mayor Mapp and Hamaway clashed
• Hamawy poll shows the candidate leading the pack
• Hamawy went door-to-door in Trenton
• Former Assemblyman Chivukula dives into district dynamics