state senate districtIllinois 45th State Senate District
presidential margin
2004–2024 · Democratic minus Republican
2004R+16.0
2008D+1.1
2012R+8.3
2016R+21.0
2020R+20.0
2024R+22.1
net swing · 2004→2024R+6.2R+16.0 → R+22.1
vs. U.S. · 2024R+20.7R+22.1 vs R+1.5
presidential returns
2024 turnout 67.8% of 165,923 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
42,600
67,494
2,404
112,498
165,923
67.8%
2020
44,838
67,930
2,623
115,391
165,444†
69.7%
2016
37,519
59,545
7,819
104,883
167,828†
62.5%
2012
45,102
53,509
2,138
100,749
168,568†
59.8%
2008
52,803
51,623
2,501
106,927
167,828†
63.7%
2004
43,552
60,268
804
104,624
167,089†
62.6%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupIL SD 45IllinoisUnited States
German32.2%16.1%12.5%
Irish15.7%10.6%9.4%
English11.3%6.9%9.5%
Italian6.9%5.4%4.8%
Swedish6.3%1.5%—
Polish4.8%6.0%2.2%
American4.1%3.3%5.3%
Norwegian2.9%——
Mexican4.9%14.4%11.3%
Puerto Rican0.4%1.7%1.8%
African American†3.5%12.1%9.9%
Filipino0.2%1.0%0.9%
Asian Indian0.2%2.1%1.4%
Chinese0.2%1.0%1.3%
Laotian0.2%——
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
IL SD 45
Illinois
United States
Median age
43.7
39.1
39.1
Age 18–24
8.8%
9.1%
9.2%
Age 65 and older
19.7%
16.9%
17.2%
Household economy
Measure
IL SD 45
Illinois
United States
Median household income
$78,409
$83,390
$84,427
Poverty rate
9.3%
11.8%
12.5%
Bachelor's degree or higher (25+)
25.0%
37.9%
35.6%
Languages at home
Measure
IL SD 45
Illinois
United States
Speaks a non-English language at home
12.3%
24.1%
22.3%
Spanish
8.5%
14.0%
13.6%
Religious landscape
Measure
IL SD 45
Illinois
United States
Catholic
—
24.2%
18.6%
Evangelical Protestant
—
11.7%
16.5%
Unclaimed / not counted
—
49.2%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Illinois 45th State Senate District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−16.0%
2008
+1.1%
2012
−8.3%
2016
−21.0%
2020
−20.0%
2024
−22.1%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
37.9%Harris42,600
60.0%Trump67,494
2.1%
R+22.1
R+2.1
R+20.7
112,498
R
38.9%Biden44,838
58.9%Trump67,930
2.3%
R+20.0
D+1.0
R+24.5
115,391
R
35.8%Clinton37,519
56.8%Trump59,545
7.5%
R+21.0
R+12.7
R+23.1
104,883
R
44.8%Obama45,102
53.1%Romney53,509
2.1%
R+8.3
R+9.4
R+12.2
100,749
D
49.4%Obama52,803
48.3%McCain51,623
2.3%
D+1.1
D+17.1
R+6.2
106,927
R
41.6%Kerry43,552
57.6%Bush60,268
0.8%
R+16.0
—
R+13.5
104,624
current representation
Current officeholders
RAndrew ChesneyState Senate · 45
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+52.3, this district sits far outside the statewide Democratic baseline, reflecting a largely rural or small-city electorate whose preferences diverge sharply from Chicago-area population centers.
Across the recorded series it reached a Democratic high of 1.1 points in 2008 and a Republican high of 22.1 points in 2024. Between 2020 and 2024 the district moved 2.1 points toward the Republican candidate; the 2024 margin was 22.1 points.
A population of 217,091, a 85% non-Hispanic-white share, and a median household income of $78,409 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 37 and State Senate District 35.
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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Illinois 45th State Senate District. Akashic. https://akashic.app/sld-upper/17045/. Accessed May 20, 2026. License: CC BY 4.0.
How did Illinois 45th State Senate District vote in 2024?
In 2024, Illinois 45th State Senate District voted Republican by 22.1 points (R+22.1), carried by the Republican candidate. Out of 112,498 votes cast, 42,600 went Democratic and 67,494 went Republican.
When did Illinois 45th State Senate District last vote Democratic?
The most recent presidential election in which Illinois 45th State Senate District voted Democratic was 2008.
How many people live in Illinois 45th State Senate District?
Illinois 45th State Senate District has a population of 217,091 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Illinois 45th State Senate District?
Median household income in Illinois 45th State Senate District is $78,409 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Illinois 45th State Senate District?
Akashic tracks 6 presidential elections in Illinois 45th State Senate District from 2004 to 2024. Of those, 1 went Democratic and 5 went Republican.
