Solano, California — Presidential Election Results
Solano, California has voted Democratic in 7 of the last 7 presidential elections on record (2000–2024). In 2024, it was 2.9 pts more Dem. than California 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. California |
|---|---|---|---|---|---|---|---|---|
| 2000 | Al Gore | Democratic | 75,116 | 57.0% | 17.8 pts (23,512 votes) | 131,735 | — | 6.1 pts more Dem. |
| 2004 | John Kerry | Democratic | 85,096 | 57.2% | 15.3 pts (22,795 votes) | 148,746 | -3.1 pts | 5.4 pts more Dem. |
| 2008 | Barack Obama | Democratic | 102,095 | 63.4% | 28.6 pts (46,060 votes) | 160,973 | +13.7 pts | 4.6 pts more Dem. |
| 2012 | Barack Obama | Democratic | 96,783 | 63.5% | 29.3 pts (44,691 votes) | 152,444 | +0.9 pts | 6.3 pts more Dem. |
| 2016 | Hillary Clinton | Democratic | 102,360 | 61.6% | 30.4 pts (50,440 votes) | 166,113 | +2.7 pts | 0.4 pts more Dem. |
| 2020 | Joseph R Biden Jr | Democratic | 131,639 | 63.9% | 30.3 pts (62,333 votes) | 205,877 | -1.7 pts | 1.2 pts more Dem. |
| 2024 | Kamala D Harris | Democratic | 113,997 | 60.1% | 23.0 pts (43,652 votes) | 189,834 | -7.3 pts | 2.9 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 | 396,974 | 33.2% of population |
| 2004 | 409,301 | 36.3% of population |
| 2008 | 408,972 | 39.4% of population |
| 2012 | 419,674 | 36.3% of population |
| 2016 | 438,858 | 37.9% of population |
| 2020 | 452,887 | 45.5% of population |
| 2024 | 455,101 | 41.7% of population |
Trend
Between 2000 and 2024, the two-party presidential margin in Solano shifted 5.1 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
Solano has matched the national popular winner in 3 of the last 7 presidential elections (43%), and California's own statewide winner in 7 of 7 (100%). Compare every county on the bellwether counties page.
Related Pages
Other California Counties
Frequently Asked Questions
How has Solano voted in presidential elections since 2000?
Since 2000, Solano 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 Solano?
Solano's closest recorded margin was in 2004, when John Kerry (Democratic) won by 15.5 points (22,795 votes) out of 148,746 total votes cast.
Has Solano ever flipped between parties?
Not in the 2000-2024 record on this page -- Solano has voted for the same party in every recorded presidential election in that span.
What is the largest presidential election margin recorded in Solano?
The widest margin on record for Solano was in 2016, when Hillary Clinton (Democratic) won by 32.7 points.
How many votes were cast in Solano relative to its population?
In 2024, 189,834 votes were recorded in Solano against a total population of 455,101 (41.7% 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 Solano a presidential bellwether county?
Solano has matched the national popular winner in 3 of the last 7 presidential elections (43%), and California's own statewide winner in 7 of 7 (100%).