- Lead
- 30,492
- Total
- 119,487
- vs nation
- R+24.0
New Jersey 12th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 17,708
- Total
- 125,532
- vs nation
- R+18.6
- Lead
- 18,742
- Total
- 105,507
- vs nation
- R+19.9
- Lead
- 9,217
- Total
- 95,577
- vs nation
- R+13.5
- Lead
- 11,973
- Total
- 104,117
- vs nation
- R+18.8
- Lead
- 17,275
- Total
- 98,552
- vs nation
- R+15.1
- Lead
- 2,115
- Total
- 84,280
- vs nation
- R+3.0
- Lead
- 1,678
- Total
- 80,837
- vs nation
- R+6.4
Key facts
- 2024 presidential margin
- R+25.5MIT Election Lab
- Population
- 225,0802024 5-year
- Population density
- 712 / sq mi2024 5-year · TIGER/Line
- Land area
- 316 sq miTIGER/Line
- Median household income
- $119,2092024 5-year
- White (non-Hispanic)
- 71.7%2024 5-year
- Black
- 4.9%2024 5-year
- Hispanic / Latino
- 11.7%2024 5-year
- Peak Democratic margin
- D+14.2 in 1964MIT Election Lab
- Peak Republican margin
- R+53.8 in 1920MIT Election Lab
- Most similar
- Assembly District 98, NY · twin score 93.6
presidential history
Party record book
New Jersey 12th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
56.8%
27,044 votes · D+14.2 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 47.2%
Republican
Warren G. Harding1920
76.0%
8,967 votes · R+53.8 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 74.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
52,838votes
42.1% of the vote · R+14.1 · modeled estimate
Runner-up · Barack Obama, 2008 · 45,361 votes
Republican
Donald Trump2024
73,752votes
61.7% of the vote · R+25.5 · modeled estimate
Runner-up · Donald Trump, 2020 · 70,546 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Al Gore2000
−3.0pts D vs U.S.
Place R+2.5 · U.S. D+0.5 · modeled estimate
Runner-up · Bill Clinton, 1996 · −6.4 pts
Republican
Dwight D. Eisenhower1956
+33.3pts R vs U.S.
Place R+48.7 · U.S. R+15.4 · modeled estimate
Runner-up · Herbert Hoover, 1932 · +32.1 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
Anchored in rural and exurban communities in the state's southern tier, this district has posted presidential margins exceeding R+20 in recent cycles, making it a consistent outlier in an otherwise competitive statewide landscape.
Across the recorded series it reached a Democratic high of 14.2 points in 1964 and a Republican high of 53.8 points in 1920. Between 2020 and 2024 the district moved 11.4 points toward the Republican candidate; the 2024 margin was 25.5 points.
A population of 225,080, a 72% non-Hispanic-white share, and a median household income of $119,209 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 98 and Assembly District 17.
The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
New Jersey 12th State House District. Akashic. https://akashic.app/sld-lower/34012/. Accessed May 20, 2026. License: CC BY 4.0.