California State Senate seat · lines in effect since 2022
California Senate District 9
A district of about 994,000 people, 25% Hispanic and 22% Asian, 46% of adults with a bachelor's degree. It votes D+41.3 relative to the nation for president.
2024 election
Nov 5, 2024- Tim Grayson (D) · won52.0%
- Marisol Rubio (D)48.0%
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 1 time. 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 | Tim Grayson (D) | Marisol Rubio (D) | 4.0 |
| Lines first used in 2012 | |||
| 2020 | Nancy Skinner (D) | Jamie Dluzak (I) | 76.7 |
| 2016 | Nancy Skinner (D) | Sandre R. Swanson (D) | 24.4 |
| 2012 | Loni Hancock (D) | Mary Catherine McIlroy (I) | 71.5 |
| Lines first used in 2002 | |||
| 2008 | Loni Hancock (D) | Claudia Bermudez (R) | 62.1 |
| 2004 | Don Perata (D) | Patricia Deutsche (R) | 61.5 |
| Lines first used in 1992 | |||
| 2000 | Don Perata (D) | Linda J. Marshall (R) | 71.9 |
| 1996 | Barbara Lee (D) | Thomas Hudson (R) | 65.6 |
| 1992 | Nicholas C. Petris (D) | David Campbell (I) | 69.2 |
| Lines first used in 1982 | |||
| 1988 | Nicholas C. Petris (D) | Greg Henson (R) | 52.7 |
| 1984 | Nicholas C. Petris (D) | Todd Roust (R) | 50.8 |
| Lines first used in 1972 | |||
| 1980 | Nicholas C. Petris (D) | Todd Roust (R) | 38.3 |
| 1976 | Nicholas C. Petris (D)Flip | Marvine Lichtenthal (R) | 41.3 |
| 1972 | Milton Marks (R) | Ronald Pelosi (D) | 18.9 |
| Lines first used in 1962 | |||
| 1968 | Milton Marks (R) | William A. Newsom (D) | 13.7 |
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 9
The state's districts in other chambers that share residents with this one, and the share of District 9'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 9.
Higher than 74% of seats.
Higher than 51% of seats.
Lower than 72% of seats.
Higher than 74% of seats.
Higher than 77% of seats.
Denser than 54% 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 827% Hispanic · 33% college gradsD+35.6Held DDistrict 39
31% Hispanic · 42% college gradsD+29.8Not up in 2026District 15
35% Hispanic · 45% college gradsD+38.3Not up in 2026District 24
65% college gradsD+39.2Held D
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