Chicago-Naperville, IL-IN-WI · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Barack Obama2008
66.8%
2,759,227 votes · D+34.6
Runner-up · Joe Biden, 2020 · 64.0%
Republican
Warren G. Harding1920
72.4%
848,259 votes · R+51.2
Runner-up · Calvin Coolidge, 1924 · 63.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
2,956,162votes
64.0% of the vote · D+29.9
Runner-up · Barack Obama, 2008 · 2,759,227 votes
Republican
Richard Nixon1972
1,976,811votes
57.6% of the vote · R+15.8
Runner-up · Ronald Reagan, 1984 · 1,892,266 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
Hillary Clinton2016
+29.0pts D vs U.S.
Place D+31.1 · U.S. D+2.1
Runner-up · Barack Obama, 2008 · +27.4 pts
Republican
Warren G. Harding1920
+25.0pts R vs U.S.
Place R+51.2 · U.S. R+26.2
Runner-up · Calvin Coolidge, 1924 · +18.9 pts
U.S. House elections · 3 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
On a multi-state Place, each row sums votes cast in the separate U.S. House races held inside the Place that year. It is a geographic vote total, not one contest or a seat tally.
Chicago-Naperville, IL-IN-WI · how this place’s counties split between candidates in each party’s presidential nominating contest, cycle by cycle. A primary is a contest inside one party, so it has no Democratic–Republican margin and is not part of the general-election record above.
Akashic reports votes cast, not delegates awarded. The two can disagree: Clinton led the 2008 national primary popular vote by less than half a point and did not win the nomination.
Primary returns are published at county grain and there is no roll-up above it. Each cell counts how many of this place’s counties a candidate led — a count of records, not a vote total. Who led the place as a whole is not knowable from these returns, because county rows carry a leader and a lead but no per-candidate votes.
Presidential nominating contests in Chicago-Naperville, IL-IN-WI, by party and cycle.
Party
2008
2012
2016
2020
2024
Democratic
Obama15Clinton41,768,762 votes · 19 of 19 countiesprimary
○no contest record
Sanders16Clinton31,780,788 votes · 19 of 19 countiesprimary
Biden191,472,546 votes · 19 of 19 countiesprimary
○no contest record
Republicannot ingested
○no contest record
○no contest record
○no contest record
○no contest record
○no contest record
○no contest record — Akashic holds no result for that party and cycle here. It is not a claim that no contest was held. Telling apart a contest that was cancelled, one that went uncontested, and one simply not yet ingested needs a nominating-contest calendar, which is a separate ingest from results and does not exist yet.
Republican presidential primaries are not yet ingested — the Republican series runs from 1856 and is in scope. The row is kept so its absence is visible: a Democratic-only panel would otherwise read as though no one else held a contest.
Akashic carries 10 states for 2012 and 3 states for 2024. Cycles in which an incumbent president seeks renomination are thin by nature — few states run a contested primary — so a sparse column is politics, not a hole in the record.
County returns carry a leader and a lead over the runner-up, and nothing more. The full candidate field with vote shares is published at state grain — follow a cycle above to the state contest for it.
domestic migration
Who moves in and out
Net domestic migration over time
−33,614 net domestic migration · 2025
20112025
Net −1,006,611 over 2011–2025 · gain loss
Domestic migration in Chicago-Naperville, IL-IN-WI in Chicago-Naperville, IL-IN-WI: net domestic migration by year
Year
Net domestic migration
2011
−53,263
2012
−51,476
2013
−51,383
2014
−66,890
2015
−84,140
2016
−88,658
2017
−86,763
2018
−84,640
2019
−75,927
2021
−94,330
2022
−125,113
2023
−67,832
2024
−42,582
2025
−33,614
Chicago-Naperville, IL-IN-WI sits in the Upper Midwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 34.6 points in 2008 and a Republican high of 51.2 points in 1920. Between 2020 and 2024 the region moved 7.6 points toward the Republican candidate; the 2024 margin was 22.3 points.
A population of 9,905,766, a 51% non-Hispanic-white share, and a median household income of $90,970 describe the region. The region's voting pattern over the last decade is most similar to that of Philadelphia-Reading-Camden, PA-NJ-DE-MD and New York-Newark, NY-NJ-CT-PA.
Akashic
Political twins — combined metros
The combined metros 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.
Chicago-Naperville, IL-IN-WI, Illinois. Akashic. https://akashic.app/csa/176/. Accessed May 20, 2026. License: CC BY 4.0.
How did Chicago-Naperville, IL-IN-WI, Illinois vote in 2024?
In 2024, Chicago-Naperville, IL-IN-WI, Illinois voted Democratic by 22.3 points (D+22.3), carried by the Democratic candidate. Out of 4,275,432 votes cast, 2,567,289 went Democratic and 1,613,641 went Republican.
When did Chicago-Naperville, IL-IN-WI, Illinois last vote Republican?
The most recent presidential election in which Chicago-Naperville, IL-IN-WI, Illinois voted Republican was 1988.
How many people live in Chicago-Naperville, IL-IN-WI, Illinois?
Chicago-Naperville, IL-IN-WI, Illinois has a population of 9,905,766 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Chicago-Naperville, IL-IN-WI, Illinois?
Median household income in Chicago-Naperville, IL-IN-WI, Illinois is $90,970 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Chicago-Naperville, IL-IN-WI, Illinois?
Akashic tracks 34 presidential elections in Chicago-Naperville, IL-IN-WI, Illinois from 1892 to 2024. Of those, 18 went Democratic and 15 went Republican.
