Kauai, Hawaii — Presidential Election Results
Kauai, Hawaii has voted Democratic in 7 of the last 7 presidential elections on record (2000–2024). In 2024, it was 3.6 pts more Rep. than Hawaii 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. Hawaii |
|---|---|---|---|---|---|---|---|---|
| 2000 | Al Gore | Democratic | 13,470 | 61.9% | 31.6 pts (6,887 votes) | 21,773 | — | 14.7 pts more Dem. |
| 2004 | John Kerry | Democratic | 14,916 | 60.0% | 20.8 pts (5,176 votes) | 24,876 | -13.4 pts | 12.2 pts more Dem. |
| 2008 | Barack Obama | Democratic | 20,416 | 75.0% | 52.1 pts (14,171 votes) | 27,224 | +32.2 pts | 7.2 pts more Dem. |
| 2012 | Barack Obama | Democratic | 18,641 | 73.5% | 49.3 pts (12,520 votes) | 25,372 | -2.6 pts | 7.2 pts more Dem. |
| 2016 | Hillary Clinton | Democratic | 16,456 | 62.5% | 33.7 pts (8,882 votes) | 26,335 | -13.6 pts | 2.1 pts more Dem. |
| 2020 | Joseph R Biden Jr | Democratic | 21,225 | 63.4% | 28.8 pts (9,643 votes) | 33,497 | -7.6 pts | 0.7 pts more Rep. |
| 2024 | Kamala D Harris | Democratic | 17,675 | 58.8% | 19.5 pts (5,872 votes) | 30,064 | -9.5 pts | 3.6 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 | 58,568 | 37.2% of population |
| 2004 | 62,095 | 40.1% of population |
| 2008 | 65,603 | 41.5% of population |
| 2012 | 68,671 | 36.9% of population |
| 2016 | 71,537 | 36.8% of population |
| 2020 | 73,209 | 45.8% of population |
| 2024 | 73,840 | 40.7% of population |
Trend
Between 2000 and 2024, the two-party presidential margin in Kauai shifted 14.4 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
Kauai has matched the national popular winner in 3 of the last 7 presidential elections (43%), and Hawaii's own statewide winner in 7 of 7 (100%). Compare every county on the bellwether counties page.
Related Pages
Other Hawaii Counties
Frequently Asked Questions
How has Kauai voted in presidential elections since 2000?
Since 2000, Kauai has voted Democratic in 7 of 7 recorded presidential elections and Republican in 0 of 7, based on county-level returns through 2024.
What was the closest presidential election in Kauai?
Kauai's closest recorded margin was in 2024, when Kamala D Harris (Democratic) won by 19.9 points (5,872 votes) out of 30,064 total votes cast.
Has Kauai ever flipped between parties?
Not in the 2000-2024 record on this page -- Kauai has voted for the same party in every recorded presidential election in that span.
What is the largest presidential election margin recorded in Kauai?
The widest margin on record for Kauai was in 2008, when Barack Obama (Democratic) won by 53.2 points.
How many votes were cast in Kauai relative to its population?
In 2024, 30,064 votes were recorded in Kauai against a total population of 73,840 (40.7% 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 Kauai a presidential bellwether county?
Kauai has matched the national popular winner in 3 of the last 7 presidential elections (43%), and Hawaii's own statewide winner in 7 of 7 (100%).