Ada, Idaho — Presidential Election Results
Ada, Idaho has voted Republican in 7 of the last 7 presidential elections on record (2000–2024). In 2024, it was 26.9 pts more Dem. than Idaho 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. Idaho |
|---|---|---|---|---|---|---|---|---|
| 2000 | George W. Bush | Republican | 75,050 | 60.8% | 27.9 pts (34,400 votes) | 123,485 | — | 12.0 pts more Dem. |
| 2004 | George W. Bush | Republican | 94,641 | 61.1% | 23.3 pts (36,118 votes) | 155,002 | +6.2 pts | 15.1 pts more Dem. |
| 2008 | John McCain | Republican | 93,328 | 52.0% | 6.2 pts (11,092 votes) | 179,402 | +17.3 pts | 19.7 pts more Dem. |
| 2012 | Mitt Romney | Republican | 97,554 | 54.0% | 11.3 pts (20,417 votes) | 180,546 | -5.4 pts | 21.2 pts more Dem. |
| 2016 | Donald Trump | Republican | 93,752 | 47.9% | 9.2 pts (18,075 votes) | 195,669 | +1.0 pts | 26.0 pts more Dem. |
| 2020 | Donald J Trump | Republican | 130,699 | 50.4% | 3.9 pts (10,160 votes) | 259,389 | +6.6 pts | 27.7 pts more Dem. |
| 2024 | Donald J Trump | Republican | 143,759 | 53.8% | 10.3 pts (27,643 votes) | 267,419 | -6.6 pts | 26.9 pts more Dem. |
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 | 303,328 | 40.7% of population |
| 2004 | 334,926 | 46.3% of population |
| 2008 | 382,618 | 46.9% of population |
| 2012 | 408,862 | 44.2% of population |
| 2016 | 444,486 | 44.0% of population |
| 2020 | 498,301 | 52.1% of population |
| 2024 | 535,799 | 49.9% of population |
Trend
Between 2000 and 2024, the two-party presidential margin in Ada shifted 19.1 points toward the Democratic 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
Ada has matched the national popular winner in 4 of the last 7 presidential elections (57%), and Idaho's own statewide winner in 7 of 7 (100%). Compare every county on the bellwether counties page.
Related Pages
Other Idaho Counties
Frequently Asked Questions
How has Ada voted in presidential elections since 2000?
Since 2000, Ada 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 Ada?
Ada's closest recorded margin was in 2020, when Donald J Trump (Republican) won by 4.0 points (10,160 votes) out of 259,389 total votes cast.
Has Ada ever flipped between parties?
Not in the 2000-2024 record on this page -- Ada has voted for the same party in every recorded presidential election in that span.
What is the largest presidential election margin recorded in Ada?
The widest margin on record for Ada was in 2000, when George W. Bush (Republican) won by 29.7 points.
How many votes were cast in Ada relative to its population?
In 2024, 267,419 votes were recorded in Ada against a total population of 535,799 (49.9% 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 Ada a presidential bellwether county?
Ada has matched the national popular winner in 4 of the last 7 presidential elections (57%), and Idaho's own statewide winner in 7 of 7 (100%).