Champaign & Springfield-Decatur · 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 Champaign & Springfield-Decatur, by party and cycle.
○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.
voter registration
Registered voters
Total registered voters, over time
Registered voters
Voter registration in Champaign & Springfield-Decatur
Year
Total registered
2016
664,126
2018
632,726
2020
675,113
2022
641,949
2024
654,861
domestic migration
Who moves in and out
Net domestic migration over time
−2,796 net domestic migration · 2025
20112025
Net −84,273 over 2011–2025 · gain loss
Domestic migration in Champaign & Springfield-Decatur in Champaign & Springfield-Decatur: net domestic migration by year
Year
Net domestic migration
2011
−2,864
2012
−5,332
2013
−6,350
2014
−6,900
2015
−6,812
2016
−7,241
2017
−8,851
2018
−9,072
2019
−8,353
2021
−2,775
2022
−7,449
2023
−5,343
2024
−4,135
2025
−2,796
The market pairs the University of Illinois's student and faculty population in Champaign-Urbana with the government-worker concentration around Springfield, producing two distinct voter pools that rarely move in lockstep.
Across the recorded series it reached a Democratic high of 16.7 points in 1932 and a Republican high of 29.4 points in 1920. Between 2020 and 2024 the market moved 1.1 points toward the Republican candidate; the 2024 margin was 18.7 points.
A population of 932,060, a 78% non-Hispanic-white share, and a median household income of $67,564 describe the market. The market's voting pattern over the last decade is most similar to that of South Bend-Elkhart and Indianapolis.
Akashic
Political twins — media markets
The media markets 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 →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Champaign & Springfield-Decatur, Illinois. Akashic. https://akashic.app/dma/648/. Accessed May 20, 2026. License: CC BY 4.0.
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How did Champaign & Springfield-Decatur, Illinois vote in 2024?
In 2024, Champaign & Springfield-Decatur, Illinois voted Republican by 18.7 points (R+18.7), carried by the Republican candidate. Out of 436,123 votes cast, 173,032 went Democratic and 254,394 went Republican.
When did Champaign & Springfield-Decatur, Illinois last vote Democratic?
The most recent presidential election in which Champaign & Springfield-Decatur, Illinois voted Democratic was 1996.
How many people live in Champaign & Springfield-Decatur, Illinois?
Champaign & Springfield-Decatur, Illinois has a population of 932,060 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Champaign & Springfield-Decatur, Illinois?
Median household income in Champaign & Springfield-Decatur, Illinois is $67,564 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Champaign & Springfield-Decatur, Illinois?
Akashic tracks 34 presidential elections in Champaign & Springfield-Decatur, Illinois from 1892 to 2024. Of those, 7 went Democratic and 27 went Republican.
