Dubuque, IA · which candidate this place backed 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 this place is a single county: Dubuque County, Iowa. The figures below are that county’s, which is the same territory — not a larger unit standing in for it.
Presidential nominating contests in Dubuque, IA, 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
By party of registration, over time
Party registration · 2024D+3.7
vs
Presidential vote · 2024R+8.6
Dubuque, IA registers Democratic but votes Republican — a 12-point gap between how voters register and how they vote, the signature of ancestral registration that trails realignment.
DemocraticRepublicanUnaffiliatedOther parties
Voter registration in Dubuque, IA
Year
Total registered
Democratic
Republican
Unaffiliated
Other
2008
64,903
27,811
13,750
23,328
14
2010
63,916
26,907
14,323
22,656
30
2012
67,553
26,992
15,878
24,592
91
2014
68,093
26,875
16,162
24,865
191
2016
69,564
28,054
17,438
23,723
349
2018
69,850
27,665
17,179
24,451
555
2020
72,152
29,007
20,904
21,633
608
2022
71,290
27,207
21,001
22,425
657
2024
71,627
25,123
22,507
23,243
754
domestic migration
Who moves in and out
Net domestic migration over time
+177 net domestic migration · 2025
20112025
Net −747 over 2011–2025 · gain loss
Domestic migration in Dubuque, IA in Dubuque, IA: net domestic migration by year
Year
Net domestic migration
2011
+265
2012
+234
2013
+433
2014
+127
2015
+21
2016
−574
2017
−48
2018
−465
2019
+106
2021
−572
2022
−273
2023
−36
2024
−142
2025
+177
Dubuque's dense Catholic parish network and working-class manufacturing base have historically anchored Democratic margins, but the area has trended Republican in presidential cycles over the past decade, mirroring broader shifts among non-college white voters.
Across the recorded series it reached a Democratic high of 46.2 points in 1932 and a Republican high of 22.9 points in 1920. Between 2020 and 2024 the metro moved 5.7 points toward the Republican candidate; the 2024 margin was 8.6 points.
A population of 99,030, a 88% non-Hispanic-white share, and a median household income of $77,630 describe the metro. The metro's voting pattern over the last decade is most similar to that of Cedar Rapids, IA and Platteville, WI.
Akashic
Political twins — metros
The 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 →
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Dubuque, IA, Iowa. Akashic. https://akashic.app/cbsa/20220/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, Dubuque, IA, Iowa voted Republican by 8.6 points (R+8.6), carried by the Republican candidate. Out of 52,770 votes cast, 23,705 went Democratic and 28,224 went Republican.
When did Dubuque, IA, Iowa last vote Democratic?
The most recent presidential election in which Dubuque, IA, Iowa voted Democratic was 2012.
How many people live in Dubuque, IA, Iowa?
Dubuque, IA, Iowa has a population of 99,030 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Dubuque, IA, Iowa?
Median household income in Dubuque, IA, Iowa is $77,630 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Dubuque, IA, Iowa?
Akashic tracks 34 presidential elections in Dubuque, IA, Iowa from 1892 to 2024. Of those, 25 went Democratic and 8 went Republican.
