California State Senate seat · lines in effect since 2022
California Senate District 3
A district of about 1,039,000 people, 31% Hispanic, 34% of adults with a bachelor's degree. It votes D+29.4 relative to the nation for president.
2024 election
Nov 5, 2024- Christopher Cabaldon (D) · won62.6%
- Thom Bogue (R)37.4%
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
Where it sits among all 40 seats
Every California State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every election for this seat
15 races since 1968; the seat changed party 3 times. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2022 | |||
| 2024 | Christopher Cabaldon (D) | Thom Bogue (R) | 25.2 |
| Lines first used in 2012 | |||
| 2020 | Bill Dodd (D) | Carlos Santamaria (R) | 36.8 |
| 2016 | Bill Dodd (D) | Mariko Yamada (D) | 16.3 |
| 2012 | Lois Wolk (D) | Frank Miranda (R) | 32.5 |
| Lines first used in 2002 | |||
| 2008 | Mark Leno (D) | Sashi McEntee (R) | 60.4 |
| 2004 | Carole Migden (D) | Andrew D. Felder (R) | 42.2 |
| Lines first used in 1992 | |||
| 2000 | John L. Burton (D) | Terence Faulkner (R) | 51.1 |
| 1996 | John L. Burton (D) | Curtis Rau (R) | 47.2 |
| 1992 | Milton Marks (D) | Bill Boerum (R) | 41.3 |
| Lines first used in 1982 | |||
| 1988 | Milton Marks (D)Flip | Carol M. Marshall (R) | 35.1 |
| 1984 | Milton Marks (R) | Lia Belli (D) | 40.8 |
| Lines first used in 1972 | |||
| 1980 | John Doolittle (R)Flip | Albert S. Rodda (D) | 3.3 |
| 1976 | Albert S. Rodda (D)Flip | — | Unopposed |
| 1972 | Clare L. Berryhill (R) | Ernest Lacoste (D) | 0.7 |
| Lines first used in 1962 | |||
| 1968 | Stephen P. Teale (D) | Walter E. Regan (R) | 22.1 |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 3
The state's districts in other chambers that share residents with this one, and the share of District 3's area in each.
Who lives here, compared
Grey bars show the spread of all 40 seats. Small marks are other seats in California. The black marker is District 3.
Lower than 51% of seats.
Higher than 82% of seats.
Lower than 56% of seats.
Higher than 79% of seats.
Higher than 56% of seats.
Less dense than 72% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 3931% Hispanic · 42% college gradsD+29.8Not up in 2026District 5
36% Hispanic · 33% college gradsD+11.6Not up in 2026District 17
46% Hispanic · 35% college gradsD+34.8Not up in 2026District 27
24% Hispanic · 50% college gradsD+24.4Not up in 2026
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET