Delaware, Pennsylvania — Presidential Election Results
Delaware, Pennsylvania has voted Democratic in 7 of the last 7 presidential elections on record (2000–2024). In 2024, it was 25.7 pts more Dem. than Pennsylvania 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. Pennsylvania |
|---|---|---|---|---|---|---|---|---|
| 2000 | Al Gore | Democratic | 134,861 | 54.4% | 11.7 pts (29,025 votes) | 248,077 | — | 7.8 pts more Dem. |
| 2004 | John Kerry | Democratic | 162,601 | 57.1% | 14.8 pts (42,176 votes) | 284,538 | +2.8 pts | 12.4 pts more Dem. |
| 2008 | Barack Obama | Democratic | 169,030 | 60.1% | 21.2 pts (59,708 votes) | 281,082 | +6.5 pts | 11.0 pts more Dem. |
| 2012 | Barack Obama | Democratic | 171,792 | 60.2% | 21.3 pts (60,939 votes) | 285,564 | +0.1 pts | 16.1 pts more Dem. |
| 2016 | Hillary Clinton | Democratic | 177,402 | 59.6% | 22.4 pts (66,735 votes) | 297,634 | +1.6 pts | 23.9 pts more Dem. |
| 2020 | Joseph R Biden Jr | Democratic | 206,423 | 62.9% | 26.8 pts (87,891 votes) | 327,931 | +3.9 pts | 25.9 pts more Dem. |
| 2024 | Kamala D Harris | Democratic | 201,324 | 61.3% | 23.7 pts (77,903 votes) | 328,172 | -3.1 pts | 25.7 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 | 551,536 | 45.0% of population |
| 2004 | 551,508 | 51.6% of population |
| 2008 | 556,246 | 50.5% of population |
| 2012 | 560,761 | 50.9% of population |
| 2016 | 563,708 | 52.8% of population |
| 2020 | 576,523 | 56.9% of population |
| 2024 | 584,882 | 56.1% of population |
Trend
Between 2000 and 2024, the two-party presidential margin in Delaware shifted 11.9 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
Delaware has matched the national popular winner in 3 of the last 7 presidential elections (43%), and Pennsylvania's own statewide winner in 5 of 7 (71%). Compare every county on the bellwether counties page.
Related Pages
Other Pennsylvania Counties
Frequently Asked Questions
How has Delaware voted in presidential elections since 2000?
Since 2000, Delaware 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 Delaware?
Delaware's closest recorded margin was in 2000, when Al Gore (Democratic) won by 12.1 points (29,025 votes) out of 248,077 total votes cast.
Has Delaware ever flipped between parties?
Not in the 2000-2024 record on this page -- Delaware has voted for the same party in every recorded presidential election in that span.
What is the largest presidential election margin recorded in Delaware?
The widest margin on record for Delaware was in 2020, when Joseph R Biden Jr (Democratic) won by 27.0 points.
How many votes were cast in Delaware relative to its population?
In 2024, 328,172 votes were recorded in Delaware against a total population of 584,882 (56.1% 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 Delaware a presidential bellwether county?
Delaware has matched the national popular winner in 3 of the last 7 presidential elections (43%), and Pennsylvania's own statewide winner in 5 of 7 (71%).