- NJ-3 is rated Lean Democratic — the Democratic incumbent enters as a modest favorite but cannot take the seat for granted.
- The Democratic incumbent is among the Republicans' top targets in their drive to expand their House majority.
- Suburban voter realignment since 2018 has made New Jersey's competitive congressional districts bellwethers for how college-educated voters respond to the national political environment.
- With Republicans holding a narrow House majority, every competitive district race contributes to whether Republicans expand their margin or Democrats recapture the chamber in 2026.
NJ-3 is rated Lean D. Andy Kim vacated the seat after winning New Jersey's U.S. Senate race in 2024. The D+3 lean and suburban composition favor Democrats, but open seats always introduce elevated uncertainty. Full House overview →
Key Facts — NJ-3
Election History — NJ-3
Race Analysis
The District: Suburban Central New Jersey
New Jersey's 3rd congressional district stretches across Somerset and Burlington counties in central New Jersey, occupying the broad suburban corridor between Philadelphia and the Raritan Valley. The district is economically diverse, blending affluent suburban townships with working-class communities and a significant healthcare and pharmaceutical employment base. Burlington County includes a large military and veteran population tied to Joint Base McGuire-Dix-Lakehurst, which shapes constituent priorities on defense spending and veterans benefits. Somerset County's higher-income communities have trended toward Democrats in recent cycles as college-educated suburban voters have shifted away from Republicans nationally.
Andy Kim built a remarkably durable brand in this district over three terms. Initially flipping the seat in 2018 against a Republican incumbent, Kim survived two subsequent cycles despite a national environment that should have put the seat at serious risk. His grassroots-heavy, constituent-focused style — including sleeping on the Senate floor after January 6th — made him a national Democratic figure. His elevation to the Senate in 2024 leaves a well-defined but distinctly personal coalition that a new Democratic candidate will need to rebuild from scratch. The institutional advantage of an open seat for Republicans means they will recruit seriously here for the first time in years.
With a D+3 lean, the district is genuinely competitive but structurally favorable to Democrats. In a midterm environment that favors Democrats, a strong Democratic recruit should be able to hold this seat with the underlying partisan composition. Republican overperformance in open-seat races means this will likely be a harder hold than Kim's margins suggested, but a full flip would require either an unusually strong Republican environment or a significant Democratic candidate quality gap.
Key Issues
Property Taxes & Affordability
New Jersey's high property tax burden is a perennial concern for NJ-3 homeowners. SALT deduction limits and housing costs affect families across Somerset and Burlington counties, creating bipartisan frustration with Washington.
Healthcare & Pharmaceutical Costs
With a major pharmaceutical sector presence in central New Jersey, drug pricing and healthcare access are central voter concerns. The district's large Medicare and Medicaid population makes healthcare funding a top issue.
Veterans & Military Base Issues
Joint Base McGuire-Dix-Lakehurst is one of the largest military installations on the East Coast, anchoring a significant veterans and active-duty community in Burlington County that makes defense spending and veterans services a key electoral consideration.
Frequently Asked Questions
Who is running in NJ-3 in 2026?
NJ-3 is an open seat in 2026. Andy Kim, who held the district, was elected to the U.S. Senate in 2024. Both parties are recruiting candidates for this Somerset and Burlington county district in central New Jersey.
What is the Cook Political Report rating for NJ-3?
NJ-3 is rated Lean D. The district carries a D+3 partisan lean and Andy Kim won it comfortably in 2022 and 2024. Open seat dynamics introduce uncertainty, but the underlying fundamentals favor Democrats.
What are the key issues driving NJ-3 in 2026?
Key issues in NJ-3 include property taxes and affordability in the suburban Philadelphia orbit, healthcare access in Burlington County, and national economic concerns. The open-seat nature of the race means candidate quality and recruitment will be decisive.
National Context & Race Outlook
NJ-3 is a competitive Lean Republican district in central New Jersey. The tracks all races. Watch the and . and drive Burlington County voters. Follow and strategy.
