Union, Illinois — Presidential Election Results
Union, Illinois has voted Republican in 7 of the last 7 presidential elections on record (2000–2024). In 2024, it was 54.9 pts more Rep. than Illinois 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. Illinois |
|---|---|---|---|---|---|---|---|---|
| 2000 | George W. Bush | Republican | 4,397 | 50.8% | 4.8 pts (415 votes) | 8,660 | — | 17.3 pts more Rep. |
| 2004 | George W. Bush | Republican | 5,333 | 58.5% | 17.5 pts (1,598 votes) | 9,119 | -12.7 pts | 28.0 pts more Rep. |
| 2008 | John McCain | Republican | 5,003 | 54.9% | 11.9 pts (1,085 votes) | 9,116 | +5.5 pts | 37.6 pts more Rep. |
| 2012 | Mitt Romney | Republican | 4,957 | 59.9% | 22.0 pts (1,820 votes) | 8,282 | -10.3 pts | 39.6 pts more Rep. |
| 2016 | Donald Trump | Republican | 5,790 | 67.8% | 39.7 pts (3,388 votes) | 8,537 | -18.9 pts | 59.4 pts more Rep. |
| 2020 | Donald J Trump | Republican | 6,161 | 69.3% | 40.3 pts (3,582 votes) | 8,886 | +0.4 pts | 58.3 pts more Rep. |
| 2024 | Donald J Trump | Republican | 5,837 | 71.0% | 43.2 pts (3,552 votes) | 8,226 | -2.7 pts | 54.9 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 | 18,267 | 47.4% of population |
| 2004 | 18,048 | 50.5% of population |
| 2008 | 17,965 | 50.7% of population |
| 2012 | 17,608 | 47.0% of population |
| 2016 | 17,105 | 49.9% of population |
| 2020 | 17,298 | 51.4% of population |
| 2024 | 16,886 | 48.7% of population |
Trend
Between 2000 and 2024, the two-party presidential margin in Union shifted 38.8 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
Union has matched the national popular winner in 4 of the last 7 presidential elections (57%), and Illinois's own statewide winner in 0 of 7 (0%). Compare every county on the bellwether counties page.
Related Pages
Other Illinois Counties
Frequently Asked Questions
How has Union voted in presidential elections since 2000?
Since 2000, Union has voted Democratic in 0 of 7 recorded presidential elections and Republican in 7 of 7, based on county-level returns through 2024.
What was the closest presidential election in Union?
Union's closest recorded margin was in 2000, when George W. Bush (Republican) won by 5.0 points (415 votes) out of 8,660 total votes cast.
Has Union ever flipped between parties?
Not in the 2000-2024 record on this page -- Union has voted for the same party in every recorded presidential election in that span.
What is the largest presidential election margin recorded in Union?
The widest margin on record for Union was in 2024, when Donald J Trump (Republican) won by 43.7 points.
How many votes were cast in Union relative to its population?
In 2024, 8,226 votes were recorded in Union against a total population of 16,886 (48.7% 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 Union a presidential bellwether county?
Union has matched the national popular winner in 4 of the last 7 presidential elections (57%), and Illinois's own statewide winner in 0 of 7 (0%).