- Lead
- 6,370
- Total
- 59,901
- vs nation
- D+12.1
Illinois 47th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 7,720
- Total
- 63,225
- vs nation
- D+7.8
- Lead
- 3,615
- Total
- 56,042
- vs nation
- D+4.4
- Lead
- 3,916
- Total
- 52,122
- vs nation
- R+11.4
- Lead
- 1,188
- Total
- 53,870
- vs nation
- R+5.1
- Lead
- 9,517
- Total
- 52,739
- vs nation
- R+15.6
- Lead
- 10,286
- Total
- 47,855
- vs nation
- R+22.0
- Lead
- 7,831
- Total
- 43,186
- vs nation
- R+26.7
Key facts
- 2024 presidential margin
- D+10.6MIT Election Lab
- Population
- 108,6212024 5-year
- Population density
- 2,336 / sq mi2024 5-year · TIGER/Line
- Land area
- 46.5 sq miTIGER/Line
- Median household income
- $125,3542024 5-year
- White (non-Hispanic)
- 73.7%2024 5-year
- Black
- 3.7%2024 5-year
- Hispanic / Latino
- 9.1%2024 5-year
- Peak Democratic margin
- D+12.2 in 2020MIT Election Lab
- Peak Republican margin
- R+72.7 in 1920MIT Election Lab
- Most similar
- State House District 45, IL · twin score 98.6
presidential history
Party record book
Illinois 47th 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
Joe Biden2020
54.5%
34,464 votes · D+12.2 · modeled estimate
Runner-up · Kamala Harris, 2024 · 53.9%
Republican
Warren G. Harding1920
83.7%
1,711 votes · R+72.7 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 82.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
34,464votes
54.5% of the vote · D+12.2 · modeled estimate
Runner-up · Kamala Harris, 2024 · 32,281 votes
Republican
Ronald Reagan1984
32,022votes
78.5% of the vote · R+57.7 · modeled estimate
Runner-up · George W. Bush, 2004 · 30,852 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
+12.1pts D vs U.S.
Place D+10.6 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +7.8 pts
Republican
Thomas E. Dewey1948
+59.5pts R vs U.S.
Place R+55.1 · U.S. D+4.5 · modeled estimate
Runner-up · Wendell Willkie, 1940 · +52.8 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 | 56.2%29,603 | 43.8%23,025 | 52,628 |
| 2020 | D | 64.4%32,155 | 35.6%17,762 | 49,917 |
Illinois 47th State House District sits in the Upper Midwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 12.2 points in 2020 and a Republican high of 72.7 points in 1920. Between 2020 and 2024 the district moved 1.6 points toward the Republican candidate; the 2024 margin was 10.6 points.
A population of 108,621, a 74% non-Hispanic-white share, and a median household income of $125,354 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 45 and State House District 81.
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 →
Illinois 47th State House District. Akashic. https://akashic.app/sld-lower/17047/. Accessed May 20, 2026. License: CC BY 4.0.