- Lead
- 33,263
- Total
- 108,555
- vs nation
- R+29.2
Illinois 47th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 31,487
- Total
- 112,690
- vs nation
- R+32.4
- Lead
- 27,113
- Total
- 106,919
- vs nation
- R+27.4
- Lead
- 7,749
- Total
- 104,653
- vs nation
- R+11.3
- Lead
- 1,155
- Total
- 109,242
- vs nation
- R+6.2
- Lead
- 12,568
- Total
- 113,083
- vs nation
- R+8.7
- Lead
- 5,564
- Total
- 105,154
- vs nation
- R+5.8
- Lead
- 4,929
- Total
- 99,744
- vs nation
- R+3.6
Key facts
- 2024 presidential margin
- R+30.6MIT Election Lab
- Population
- 217,2882024 5-year
- Population density
- 36 / sq mi2024 5-year · TIGER/Line
- Land area
- 5,993 sq miTIGER/Line
- Median household income
- $68,2962024 5-year
- White (non-Hispanic)
- 91.0%2024 5-year
- Black
- 1.8%2024 5-year
- Hispanic / Latino
- 2.9%2024 5-year
- Peak Democratic margin
- D+15.0 in 1912MIT Election Lab
- Peak Republican margin
- R+41.5 in 1920MIT Election Lab
- Most similar
- State Senate District 30, OH · twin score 96.7
presidential history
Party record book
Illinois 47th 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
Franklin D. Roosevelt1932
53.7%
56,060 votes · D+9.3 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 53.5%
Republican
Warren G. Harding1920
68.4%
55,729 votes · R+41.5 · modeled estimate
Runner-up · Richard Nixon, 1972 · 67.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
60,720votes
53.5% of the vote · D+7.0 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 59,232 votes
Republican
Dwight D. Eisenhower1952
80,665votes
66.6% of the vote · R+33.3 · modeled estimate
Runner-up · Richard Nixon, 1972 · 78,681 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
Michael Dukakis1988
+2.0pts D vs U.S.
Place R+5.8 · U.S. R+7.7 · modeled estimate
Runner-up · Bill Clinton, 1992 · +0.6 pts
Republican
Donald Trump2020
+32.4pts R vs U.S.
Place R+27.9 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2024 · +29.2 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 | R | 21.3%20,104 | 78.7%74,092 | 94,196 |
| 2020 | R | 38.6%42,299 | 61.4%67,286 | 109,585 |
Anchored in deeply rural southern Illinois, this district delivered a 30.6-point Republican presidential margin in 2024 — one of the widest gaps in the state — reflecting a population that has shifted sharply away from its historically Democratic downstate roots.
Across the recorded series it reached a Democratic high of 15.0 points in 1912 and a Republican high of 41.5 points in 1920. Between 2020 and 2024 the district moved 2.7 points toward the Republican candidate; the 2024 margin was 30.6 points.
A population of 217,288, a 91% non-Hispanic-white share, and a median household income of $68,296 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 30 and State Senate District 44.
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 →
Illinois 47th State Senate District. Akashic. https://akashic.app/sld-upper/17047/. Accessed May 20, 2026. License: CC BY 4.0.