- Lead
- 1,119
- Total
- 14,677
- vs nation
- D+9.1
- Turnout
- 79.7%
Iowa County, WI
▦ precinct · ▥ counties · ▢ no spatial detail
President margin by year
Place winner margin
President results by year
2024 turnout 79.7% of 18,493 citizens 18+
- Lead
- 1,919
- Total
- 13,992
- vs nation
- D+9.3
- Turnout
- 77.5%
- Lead
- 1,860
- Total
- 12,275
- vs nation
- D+13.1
- Turnout
- 68.5%
- Lead
- 3,818
- Total
- 12,534
- vs nation
- D+26.6
- Turnout
- —
- Lead
- 4,158
- Total
- 11,969
- vs nation
- D+27.5
- Turnout
- —
- Lead
- 1,774
- Total
- 12,542
- vs nation
- D+16.6
- Turnout
- —
- Lead
- 1,621
- Total
- 10,541
- vs nation
- D+14.9
- Turnout
- —
- Lead
- 1,824
- Total
- 8,916
- vs nation
- D+11.9
- Turnout
- —
Key facts
- 2024 presidential margin
- D+7.6MIT Election Lab
- Population
- 23,8672024 5-year
- Population density
- 31 / sq mi2024 5-year · TIGER/Line
- Land area
- 763 sq miTIGER/Line
- Median household income
- $82,1822024 5-year
- White (non-Hispanic)
- 92.4%2024 5-year
- Black
- 0.8%2024 5-year
- Hispanic / Latino
- 2.3%2024 5-year
- Peak Democratic margin
- D+34.7 in 2008MIT Election Lab
- Peak Republican margin
- R+67.3 in 1920MIT Election Lab
- Most similar
- Sauk County, WI · twin score 94.9
Turnout and midterm durability
Participation measured against the same-year citizen voting-age population. Audited cycles count total general-election participants — ballots or participating voters, not presidential candidate votes. Cycles before 2016 predate that series and are derived from the certified presidential returns instead; they are marked everywhere they appear and are excluded from the figures below.
- 2024 turnout
- 79.7%14,732 participants ÷ 18,493 CVAP
- 2020→2022 drop-off
- +13.8 ptsVolatile
- Drop-off vs state
- -1.7 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026
- 65.8%–69.8%Recent-cycle and two-cycle persistence scenarios; not a forecast
Select a presidential cycle to show it on the map and results ledger above.
| Cycle | Participants | CVAP | Turnout | Series | Quality |
|---|---|---|---|---|---|
| 14,732 | 18,493 ± 105 | 79.7% | Audited | C/A | |
| 2022Mid | 11,727 | 18,407 ± 101 | 63.7% | Audited | C/A |
| 14,052 | 18,124 ± 86 | 77.5% | Audited | C/A | |
| 2018Mid | 11,248 | 17,958 ± 84 | 62.6% | Audited | C/A |
| 12,362 | 18,042 ± 73 | 68.5% | Audited | C/A | |
| 12,534 | 17,721 | 70.7% | Derived | — | |
| 11,969 | 17,659 | 67.8% | Derived | — | |
| 12,542 | 17,597 extrapolated | 71.3% | Derived | — |
Sources and methods
Audited cycles (2016, 2018, 2020, 2022, 2024) count total general-election participants against the same-year CVAP special tabulation, each cell carrying its own numerator and denominator quality grade. Derived cycles (2004, 2008, 2012) come from the certified presidential returns on this page over the ACS 5-year CVAP series, so they measure presidential votes cast rather than ballots — a floor on participation. Where a derived cycle predates the ACS its denominator is extrapolated rather than read, and says so on its own line below. They are shown for the longer arc and are excluded from the drop-off, excess-drop-off, and 2026 scenario figures above.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:partially allocated; allocation share 1.3%; series 312/228.
- 2022: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:partially allocated; allocation share 1.3%; series 307/183.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:partially allocated; allocation share 1.3%; series 302/2.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:partially allocated; allocation share 1.4%; series 298/138.
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:partially allocated; allocation share 1.3%; series 294/111.
- 2012 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
- 2008 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
- 2004 (derived): Certified presidential returns · extrapolated CVAP denominator; presidential votes cast — a floor on participation, not a ballot count; 2004 predates the ACS, so the denominator is a linear back-extrapolation from the 2008 and 2012 CVAP values, not a read figure.
Interactive election map
One map. Every available contest.
Explore precinct resultsSearch, sort, compare years, or export CSV · 29 precincts
Precinct data
Results by precinct
29 precincts · 14,677 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -CITY OF DODGEVILLE WARDS 1-10CITY OF DODGEVILLE WARDS 1-10 | 1,659 | 1,085 | 69 | 2,813 | 59.0% | 38.6% | D+20.4 |
|---|---|---|---|---|---|---|---|
| Precinct -CITY OF MINERAL POINT WARDS 1-8CITY OF MINERAL POINT WARDS 1-8 | 990 | 561 | 26 | 1,577 | 62.8% | 35.6% | D+27.2 |
| Precinct -TOWN OF DODGEVILLE WARDS 1-3TOWN OF DODGEVILLE WARDS 1-3 | 620 | 469 | 16 | 1,105 | 56.1% | 42.4% | D+13.7 |
| Precinct -TOWN OF ARENA WARDS 1-3TOWN OF ARENA WARDS 1-3 | 496 | 459 | 16 | 971 | 51.1% | 47.3% | D+3.8 |
| Precinct -VILLAGE OF BARNEVELD WARDS 1-2VILLAGE OF BARNEVELD WARDS 1-2 | 427 | 355 | 17 | 799 | 53.4% | 44.4% | D+9.0 |
| Precinct -TOWN OF BRIGHAM WARDS 1-2TOWN OF BRIGHAM WARDS 1-2 | 461 | 306 | 20 | 787 | 58.6% | 38.9% | D+19.7 |
| Precinct -TOWN OF MINERAL POINT WARDS 1-3TOWN OF MINERAL POINT WARDS 1-3 | 269 | 365 | 10 | 644 | 41.8% | 56.7% | R+14.9 |
| Precinct -VILLAGE OF ARENA WARD 1VILLAGE OF ARENA WARD 1 | 241 | 257 | 9 | 507 | 47.5% | 50.7% | R+3.2 |
| Precinct -VILLAGE OF HIGHLAND WARD 1VILLAGE OF HIGHLAND WARD 1 | 218 | 264 | 13 | 495 | 44.0% | 53.3% | R+9.3 |
| Precinct -TOWN OF LINDEN WARDS 1-2TOWN OF LINDEN WARDS 1-2 | 159 | 295 | 3 | 457 | 34.8% | 64.6% | R+29.8 |
| Precinct -TOWN OF HIGHLAND WARDS 1-4TOWN OF HIGHLAND WARDS 1-4 | 183 | 256 | 10 | 449 | 40.8% | 57.0% | R+16.3 |
| Precinct -TOWN OF RIDGEWAY WARDS 1-2TOWN OF RIDGEWAY WARDS 1-2 | 248 | 166 | 11 | 425 | 58.4% | 39.1% | D+19.3 |
| Precinct -TOWN OF MOSCOW WARD 1TOWN OF MOSCOW WARD 1 | 207 | 207 | 8 | 422 | 49.1% | 49.1% | Exact tie |
| Precinct -VILLAGE OF RIDGEWAY WARD 1VILLAGE OF RIDGEWAY WARD 1 | 216 | 180 | 11 | 407 | 53.1% | 44.2% | D+8.8 |
| Precinct -TOWN OF MIFFLIN WARD 1TOWN OF MIFFLIN WARD 1 | 125 | 177 | 8 | 310 | 40.3% | 57.1% | R+16.8 |
| Precinct -TOWN OF WALDWICK WARDS 1-3TOWN OF WALDWICK WARDS 1-3 | 153 | 148 | 5 | 306 | 50.0% | 48.4% | D+1.6 |
| Precinct -VILLAGE OF COBB WARD 1VILLAGE OF COBB WARD 1 | 143 | 134 | 10 | 287 | 49.8% | 46.7% | D+3.1 |
| Precinct -VILLAGE OF LINDEN WARD 1VILLAGE OF LINDEN WARD 1 | 135 | 126 | 6 | 267 | 50.6% | 47.2% | D+3.4 |
| Precinct -TOWN OF WYOMING WARD 1TOWN OF WYOMING WARD 1 | 156 | 90 | 6 | 252 | 61.9% | 35.7% | D+26.2 |
| Precinct -VILLAGE OF AVOCA WARD 1VILLAGE OF AVOCA WARD 1 | 88 | 158 | 6 | 252 | 34.9% | 62.7% | R+27.8 |
| Precinct -TOWN OF CLYDE WARD 1TOWN OF CLYDE WARD 1 | 131 | 98 | 3 | 232 | 56.5% | 42.2% | D+14.2 |
| Precinct -TOWN OF EDEN WARD 1TOWN OF EDEN WARD 1 | 98 | 129 | 1 | 228 | 43.0% | 56.6% | R+13.6 |
| Precinct -TOWN OF PULASKI WARD 1TOWN OF PULASKI WARD 1 | 74 | 124 | 1 | 199 | 37.2% | 62.3% | R+25.1 |
| Precinct -VILLAGE OF HOLLANDALE WARD 1VILLAGE OF HOLLANDALE WARD 1 | 92 | 67 | 2 | 161 | 57.1% | 41.6% | D+15.5 |
| Precinct -VILLAGE OF BLANCHARDVILLE WARDS 2-3VILLAGE OF BLANCHARDVILLE WARDS 2-3 | 63 | 61 | 1 | 125 | 50.4% | 48.8% | D+1.6 |
| Precinct -VILLAGE OF REWEY WARD 1VILLAGE OF REWEY WARD 1 | 61 | 52 | 7 | 120 | 50.8% | 43.3% | D+7.5 |
| Precinct -VILLAGE OF MONTFORT WARD 2VILLAGE OF MONTFORT WARD 2 | 30 | 25 | 1 | 56 | 53.6% | 44.6% | D+8.9 |
| Precinct -VILLAGE OF MUSCODA WARD 3VILLAGE OF MUSCODA WARD 3 | 7 | 14 | 0 | 21 | 33.3% | 66.7% | R+33.3 |
| Precinct -VILLAGE OF LIVINGSTON WARD 2VILLAGE OF LIVINGSTON WARD 2 | 0 | 3 | 0 | 3 | 0.0% | 100.0% | R+100.0 |
presidential history
Party record book
Iowa County, 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
66.7%
7,987 votes · D+34.7
Runner-up · Barack Obama, 2012 · 64.7%
Republican
Warren G. Harding1920
81.4%
5,428 votes · R+67.3
Runner-up · Dwight D. Eisenhower, 1952 · 69.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2012
8,105votes
64.7% of the vote · D+30.5
Runner-up · Barack Obama, 2008 · 7,987 votes
Republican
Donald Trump2024
6,631votes
45.2% of the vote · D+7.6
Runner-up · Dwight D. Eisenhower, 1952 · 6,211 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
Barack Obama2008
+27.5pts D vs U.S.
Place D+34.7 · U.S. D+7.3
Runner-up · Barack Obama, 2012 · +26.6 pts
Republican
Warren G. Harding1920
+41.1pts R vs U.S.
Place R+67.3 · U.S. R+26.2
Runner-up · Dwight D. Eisenhower, 1952 · +28.2 pts
Current officeholders
Seats representing Iowa County, WI. A county elects none of these itself — they are the members for the 1 congressional, 1 state senate and 1 state house districts it falls inside, so parts of the county are represented by different members.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−35 net domestic migration · 2025
Net −498 over 2011–2025 · gain loss
Arrivals reported $70,600 in average income, against $86,433 for residents who stayed — 18% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+19.9 on average — 12 points more Democratic-leaning than Iowa County, WI itself (D+7.6).
Where arrivals came from lean of each source
- Dane County, WI192D+51.5
- Grant County, WI86R+18.1
- Lafayette County, WI36R+20.2
- Richland County, WI25R+13.1
- Sauk County, WI24R+1.7
Where departures went households, 2022–23
- Dane County, WI153
- Grant County, WI85
- Lafayette County, WI40
- Sauk County, WI33
- Richland County, WI29
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | −182 |
| 2012 | −78 |
| 2013 | −90 |
| 2014 | −29 |
| 2015 | −38 |
| 2016 | −189 |
| 2017 | +167 |
| 2018 | −31 |
| 2019 | −103 |
| 2021 | +53 |
| 2022 | +98 |
| 2023 | −78 |
| 2024 | +37 |
| 2025 | −35 |
Iowa County, Wisconsin posted a D+7.6 margin in 2024, an outlier relative to surrounding rural counties. Its mix of small-farm communities and proximity to university-influenced Dodgeville anchors a persistently center-left tilt.
Across the recorded series it reached a Democratic high of 34.7 points in 2008 and a Republican high of 67.3 points in 1920. Between 2020 and 2024 the county moved 6.1 points toward the Republican candidate; the 2024 margin was 7.6 points.
A population of 23,867, a 92% non-Hispanic-white share, and a median household income of $82,182 describe the county. The county's voting pattern over the last decade is most similar to that of Sauk County and Cerro Gordo County.
The counties 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.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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 →
Iowa County, Wisconsin. Akashic. https://akashic.app/county/55049/. Accessed May 20, 2026. License: CC BY 4.0.