Louisa, Iowa — Presidential Election Results
Louisa, Iowa has voted Republican in 4 of the last 7 presidential elections on record (2000–2024). It most recently flipped to Republican in 2016. In 2024, it was 28.1 pts more Rep. than Iowa overall.
Jump to year: 2000 · 2004 · 2008 · 2012 · 2016 · 2020 · 2024
Full Election History, 2000–2024
| Year | Winner | Party | Votes | Vote Share | Margin | Total Votes Cast | Swing | Vs. Iowa |
|---|---|---|---|---|---|---|---|---|
| 2000 | Al Gore | Democratic | 2,294 | 49.5% | 1.9 pts (87 votes) | 4,637 | — | 1.6 pts more Dem. |
| 2004 | George W. Bush | Republican | 2,572 | 52.3% | 5.6 pts (275 votes) | 4,916 | -7.6 pts | 5.0 pts more Rep. |
| 2008 | Barack Obama | Democratic | 2,523 | 51.3% | 4.2 pts (209 votes) | 4,920 | +10.0 pts | 5.4 pts more Rep. |
| 2012 | Barack Obama | Democratic | 2,452 | 49.4% | 0.6 pts (32 votes) | 4,968 | -3.7 pts | 5.3 pts more Rep. |
| 2016 | Donald Trump | Republican | 3,069 | 61.3% | 28.4 pts (1,421 votes) | 5,008 | -30.8 pts | 20.0 pts more Rep. |
| 2020 | Donald J Trump | Republican | 3,506 | 65.8% | 33.4 pts (1,780 votes) | 5,332 | -3.9 pts | 25.4 pts more Rep. |
| 2024 | Donald J Trump | Republican | 3,584 | 69.7% | 40.9 pts (2,104 votes) | 5,142 | -7.5 pts | 28.1 pts more Rep. |
Population Context
Total Census Bureau population estimate for the county that year, and recorded votes as a share of that total population. This is a population-based figure, not a turnout rate against eligible or registered voters, which this site does not calculate.
| Year | County Population | Votes Cast (% of Population) |
|---|---|---|
| 2000 | 12,174 | 38.1% of population |
| 2004 | 12,115 | 40.6% of population |
| 2008 | 11,830 | 41.6% of population |
| 2012 | 11,360 | 43.7% of population |
| 2016 | 11,221 | 44.6% of population |
| 2020 | 10,825 | 49.3% of population |
| 2024 | 10,630 | 48.4% of population |
Trend
Between 2000 and 2024, the two-party presidential margin in Louisa shifted 43.5 points toward the Republican candidate, based on recorded county returns. This reflects the vote totals in this dataset only; no claim is made here about the causes of that shift.
Margin Over Time
Democratic candidate's margin (percentage points, two-party vote share). Positive values favor the Democratic candidate; negative values favor the Republican candidate.
Bellwether Status
Louisa has matched the national popular winner in 5 of the last 7 presidential elections (71%), and Iowa's own statewide winner in 7 of 7 (100%). Compare every county on the bellwether counties page.
Related Pages
Other Iowa Counties
Frequently Asked Questions
How has Louisa voted in presidential elections since 2000?
Since 2000, Louisa has voted Democratic in 3 of 7 recorded presidential elections and Republican in 4 of 7, based on county-level returns through 2024.
What was the closest presidential election in Louisa?
Louisa's closest recorded margin was in 2012, when Barack Obama (Democratic) won by 0.7 points (32 votes) out of 4,968 total votes cast.
Has Louisa ever flipped between parties?
Yes. Louisa changed which party won the county in: 2004, 2008, 2016, based on the 2000-2024 record on this page.
What is the largest presidential election margin recorded in Louisa?
The widest margin on record for Louisa was in 2024, when Donald J Trump (Republican) won by 41.5 points.
How many votes were cast in Louisa relative to its population?
In 2024, 5,142 votes were recorded in Louisa against a total population of 10,630 (48.4% of the total population). This is a population-based figure, not a turnout rate against eligible or registered voters, which this site does not calculate.
Is Louisa a presidential bellwether county?
Louisa has matched the national popular winner in 5 of the last 7 presidential elections (71%), and Iowa's own statewide winner in 7 of 7 (100%).