Represented by Democrat Josh Gottheimer
District Defense links:  

New Jersey's 5th Congressional District is its most northerly, including all of New Jersey's land border with New York, and a decent bit of its border with Pennsylvania as well.  It stretches from the densely populated suburbs of Bergen County (including Bergenfield, Hackensack,and Paramus), through West Milford and Ringwood in Passaic County, into the the more rural Sussex and Warren counties (including Andover, Branchville, Newton, and Washington).

The 5th District is also the only one of New Jersey's seven Democratically-controlled districts that you will find on this list, as holding it will be essential to winning control of the House. First-term representative Josh Gottheimer narrowly defeated Republican incumbent Scott Garrett in November 2016, becoming the first Democrat to hold the seat since a single-term New-Deal-era Democrat was defeated in 1932.  

Unsurprisingly in a district that went for Trump by 1%, Gottheimer has styled himself a centrist moderate, bragging about being named 2016's most bipartisan first-year representative.  However, he has voted against the Trump Regime when it counts.  With a Trump Score of 46.2%, Gottheimer opposed the Tax Scam, the 20-week abortion ban, TrumpCare, and laws gutting environmental protections and financial regulations.  

Two Republicans have announced challenges to Gottheimer.  Far-right former Bogota mayor Steve Lonegan, whom the Democratic Congressional Campaign Committee describes as an “anti-choice, anti-gay Tea Party bigot” seems to be the front runner, though the more moderate John McCann has also announced his intention to run.