New Hampshire 21st State Senate 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
74.5%
7,930 votes · D+49.0 · modeled estimate
Runner-up · Joe Biden, 2020 · 70.2%
Republican
William McKinley1896
56.7%
1,347 votes · R+16.8 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 55.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
25,014votes
70.2% of the vote · D+42.1 · modeled estimate
Runner-up · Kamala Harris, 2024 · 24,537 votes
Republican
Donald Trump2024
11,030votes
30.5% of the vote · D+37.4 · modeled estimate
Runner-up · George W. Bush, 2004 · 10,363 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
Kamala Harris2024
+38.8pts D vs U.S.
Place D+37.4 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +37.6 pts
Republican
William McKinley1896
+10.7pts R vs U.S.
Place R+16.8 · U.S. R+6.1 · modeled estimate
Runner-up · Alf Landon, 1936 · −2.8 pts
current representation
Current officeholders
DRebecca Perkins KwokaState Senate · 21
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 3 House
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.
Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year
Vote lead
Democratic
Republican
Total
2024
D
53.9%18,337
46.1%15,709
34,046
2020
D
53.0%16,918
47.0%14,999
31,917
2018
D
54.4%12,675
45.6%10,635
23,310
With a 2024 presidential margin of D+37.5, this district ranks among the most lopsided in the state senate map, suggesting a dense urban or college-town core that consistently produces outsized Democratic margins.
Across the recorded series it reached a Democratic high of 49.0 points in 1964 and a Republican high of 16.8 points in 1896. Between 2020 and 2024 the district moved 4.7 points toward the Republican candidate; the 2024 margin was 37.4 points.
A population of 56,894, a 87% non-Hispanic-white share, and a median household income of $111,746 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 4 and State Senate District 15.
Akashic
Political twins — state-senate districts
The state-senate 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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons → · Or open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
New Hampshire 21st State Senate District. Akashic. https://akashic.app/sld-upper/33021/. Accessed May 20, 2026. License: CC BY 4.0.
How did New Hampshire 21st State Senate District vote in 2024?
In 2024, New Hampshire 21st State Senate District voted Democratic by 37.4 points (D+37.4), carried by the Democratic candidate. Out of 36,138 votes cast, 24,537 went Democratic and 11,030 went Republican.
When did New Hampshire 21st State Senate District last vote Republican?
The most recent presidential election in which New Hampshire 21st State Senate District voted Republican was 1984.
How many people live in New Hampshire 21st State Senate District?
New Hampshire 21st State Senate District has a population of 56,894 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in New Hampshire 21st State Senate District?
Median household income in New Hampshire 21st State Senate District is $111,746 — above the national median of $80,734. The New Hampshire state median is $99,031.
What is the political history of New Hampshire 21st State Senate District?
Akashic tracks 38 presidential elections in New Hampshire 21st State Senate District from 1876 to 2024. Of those, 31 went Democratic and 7 went Republican.