- Lead
- 42,165
- Total
- 59,369
- vs nation
- D+72.5
New York 66th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 50,552
- Total
- 62,282
- vs nation
- D+76.7
- Lead
- 50,607
- Total
- 62,903
- vs nation
- D+78.4
- Lead
- 41,477
- Total
- 55,620
- vs nation
- D+70.7
- Lead
- 48,079
- Total
- 62,014
- vs nation
- D+70.3
- Lead
- 42,445
- Total
- 59,214
- vs nation
- D+74.1
- Lead
- 37,410
- Total
- 53,308
- vs nation
- D+69.7
- Lead
- 32,693
- Total
- 46,102
- vs nation
- D+62.4
Key facts
- 2024 presidential margin
- D+71.0MIT Election Lab
- Population
- 140,6472024 5-year
- Population density
- 70,324 / sq mi2024 5-year · TIGER/Line
- Land area
- 2 sq miTIGER/Line
- Median household income
- $169,4212024 5-year
- White (non-Hispanic)
- 71.7%2024 5-year
- Black
- 2.8%2024 5-year
- Hispanic / Latino
- 8.5%2024 5-year
- Peak Democratic margin
- D+81.2 in 2020MIT Election Lab
- Peak Republican margin
- R+19.0 in 1920MIT Election Lab
- Most similar
- Assembly District 75, NY · twin score 97.0
presidential history
Party record book
New York 66th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2020 (partial returns from 1876) · 37 presidential cycles · 37 with a vote-share denominator · 33 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Joe Biden2020
90.0%
56,079 votes · D+81.2 · modeled estimate
Runner-up · Barack Obama, 2008 · 88.3%
Republican
Warren G. Harding1920
52.1%
20,401 votes · R+19.0 · modeled estimate
Runner-up · William McKinley, 1896 · 44.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
56,079votes
90.0% of the vote · D+81.2 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 55,406 votes
Republican
Dwight D. Eisenhower1952
22,271votes
32.8% of the vote · D+19.1 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 22,255 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
Hillary Clinton2016
+78.4pts D vs U.S.
Place D+80.5 · U.S. D+2.1 · modeled estimate
Runner-up · Joe Biden, 2020 · +76.7 pts
Republican
Warren G. Harding1920
−7.1pts R vs U.S.
Place R+19.0 · U.S. R+26.2 · modeled estimate
Runner-up · William McKinley, 1896 · −11.4 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.
Assembly District 66, centered in Manhattan, ranks among the most one-sided state legislative districts in New York, where presidential contests have become effectively uncompetitive and turnout patterns reflect a dense, highly educated urban electorate.
Across the recorded series it reached a Democratic high of 81.2 points in 2020 and a Republican high of 19.0 points in 1920. Between 2020 and 2024 the district moved 10.1 points toward the Republican candidate; the 2024 margin was 71.0 points.
A population of 140,647, a 72% non-Hispanic-white share, and a median household income of $169,421 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 75 and Assembly District 67.
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 York 66th State House District. Akashic. https://akashic.app/sld-lower/36066/. Accessed May 20, 2026. License: CC BY 4.0.