- Lead
- 3,228
- Total
- 17,286
- vs nation
- R+17.2
Rhode Island 21st State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 2,216
- Total
- 17,502
- vs nation
- R+17.1
- Lead
- 2,909
- Total
- 15,362
- vs nation
- R+21.0
- Lead
- 595
- Total
- 13,938
- vs nation
- R+8.1
- Lead
- 740
- Total
- 14,826
- vs nation
- R+12.3
- Lead
- 1,642
- Total
- 13,985
- vs nation
- R+9.3
- Lead
- 290
- Total
- 12,794
- vs nation
- D+1.7
- Lead
- 1,130
- Total
- 12,330
- vs nation
- D+0.6
Key facts
- 2024 presidential margin
- R+18.7MIT Election Lab
- Population
- 28,1232024 5-year
- Population density
- 183 / sq mi2024 5-year · TIGER/Line
- Land area
- 154 sq miTIGER/Line
- Median household income
- $121,2792024 5-year
- White (non-Hispanic)
- 91.9%2024 5-year
- Black
- 0.6%2024 5-year
- Hispanic / Latino
- 2.7%2024 5-year
- Peak Democratic margin
- D+37.7 in 1964MIT Election Lab
- Peak Republican margin
- R+70.8 in 1896MIT Election Lab
- Most similar
- State Senate District 23, RI · twin score 98.2
presidential history
Party record book
Rhode Island 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
68.9%
7,756 votes · D+37.7 · modeled estimate
Runner-up · Hubert Humphrey, 1968 · 47.5%
Republican
William McKinley1896
83.0%
1,713 votes · R+70.8 · modeled estimate
Runner-up · James A. Garfield, 1880 · 78.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
7,756votes
68.9% of the vote · D+37.7 · modeled estimate
Runner-up · Joe Biden, 2020 · 7,440 votes
Republican
Dwight D. Eisenhower1956
11,319votes
75.3% of the vote · R+50.6 · modeled estimate
Runner-up · Richard Nixon, 1972 · 10,853 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
Lyndon B. Johnson1964
+15.2pts D vs U.S.
Place D+37.7 · U.S. D+22.6 · modeled estimate
Runner-up · Al Gore, 2000 · +1.7 pts
Republican
William McKinley1896
+64.7pts R vs U.S.
Place R+70.8 · U.S. R+6.1 · modeled estimate
Runner-up · William McKinley, 1900 · +49.5 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.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 59.5%7,353 | 40.5%5,003 | 12,356 |
Rhode Island 21st State Senate District sits in New England. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 37.7 points in 1964 and a Republican high of 70.8 points in 1896. Between 2020 and 2024 the district moved 6.0 points toward the Republican candidate; the 2024 margin was 18.7 points.
A population of 28,123, a 92% non-Hispanic-white share, and a median household income of $121,279 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 23 and State Senate District 22.
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.
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 →
Rhode Island 21st State Senate District. Akashic. https://akashic.app/sld-upper/44021/. Accessed May 20, 2026. License: CC BY 4.0.