99chambers

U.S. House seat · lines in effect since 2022

New Jersey's 12th District

A district of about 784,000 people, 23% Hispanic, 49% of adults with a bachelor's degree. It votes D+27.1 relative to the nation for president.

Adam Hamawy (D) · from Jan 3, 2027Next election Nov 7, 2028The 2026 race →
NJ-12

Source: 2026 results: civicAPI; boundaries: Census Bureau TIGER/LineUpdated Nov 7, 2026, 3:01 PM ET

Where it sits among all 435 seats

Every U.S. House seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

D+27.189th most
Democratic
Most DemocraticMost Republican218th seat · the majority line108NJ-121116359724

Labels below the bar mark 11 other seats in New Jersey.

Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

202220242026
U.S. SenateNo raceD+22.8No race
U.S. HouseD+27.2D+24.8D+42.3

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 435 seats. Small marks are other seats in New Jersey. The black marker is NJ-12.

Adults with a bachelor's degree49% 87th pct · 4th of 12 in NJ

Higher than 87% of seats.

White adults without a degree20% 19th pct · 10th of 12 in NJ

Lower than 81% of seats.

Hispanic residents23% 72nd pct · 4th of 12 in NJ

Higher than 72% of seats.

Black residents15% 74th pct · 3rd of 12 in NJ

Higher than 74% of seats.

Asian residents20% 96th pct · 1st of 12 in NJ

Higher than 96% of seats.

People per square mile1,759 77th pct · 7th of 12 in NJ

Denser than 77% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET

Seats most like this one

Nearest seats on demographics, density and lean.

CA-10
21% Hispanic · 52% college gradsD+35.9Held DNJ-6
25% Hispanic · 43% college gradsD+9.7Held DTX-7
36% Hispanic · 49% college gradsD+26.2Held DCA-32
25% Hispanic · 52% college gradsD+27.9Held D

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Who has held it

These lines took effect in 2022.

  1. Adam Hamawy (D)
    2027– · Won 2026 by 42.3
  2. Bonnie Watson Coleman (D)
    2023–2027 · Won 2022 by 27.2, 2024 by 24.8

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)