California Senate · District 34

Tom Umberg

Democratic

Where they sit

Every current senator, placed from most liberal to most conservative by how they voted on contested bills.

How these numbers work →
Umberg
← Most liberalThe aisleMost conservative →
Votes with DemocratsCrosses party linesVotes with Republicans

Tom Umberg's seat is marked. Seats run from most liberal (left) to most conservative (right), by contested floor votes. Color shows how often each member crosses party lines toward the middle on votes that divide the parties: solid blue or red means almost never, and purple means on at least 1 in 10 of those votes. Gray seats are members too new to score. How these numbers work

California Senate61stpercentile
More conservative than 60% of the California Senate.
Most liberalMost conservative
16th most conservative of 39
Votes with the Senate President pro Tem
99%
Democrats Republicans 0%100%

Each tick is a current senator, by party; the dot is Tom Umberg.

On 832 contested votes where both voted99% on all 3,538 votes where both voted
Votes with own party
99%
Democrats Republicans 85%100%

Each tick is a current senator, by party; the dot is Tom Umberg.

On 867 party-line votesPartisan rank: 7 of 39 in the Senate (tied with 22 others)6 senators vote with their party more often

Bills

The bills Tom Umberg sponsored this term and how far they got. Co-sponsors aren’t counted.

How these numbers work →
Bills: Tom Umberg
Bills
Sponsored36
Passed both chambers26
Became law24
Vetoed by the Governor2

Rank by bills passed: Rank 4 of 39 in the Senate (tied with 1 other) · 4 of 29 Democrats (tied with 1 other)

A bill's sponsor is its primary author, as the Legislature marks it on the bill's last version; joint authors and coauthors aren't counted, and a committee's bill counts for no member.

Bills that passed both chambers

Bills that passed both chambers: Tom Umberg
BillResultFinal action
SB 758
Public health: nitrous oxide.
Became law Sept. 30, 2026
SB 574
Attorneys, arbitrators, judicial officers, and alternative resolution providers.
Became law Sept. 30, 2026
SB 490
Alcohol and drug programs.
Vetoed Sept. 30, 2026
SB 342
Contractors: unlicensed work.
Became law Sept. 30, 2026
SB 96
Streaming services: commercial advertisements.
Became law Sept. 28, 2026
SB 883
Hazardous materials: reactive chemicals: methyl methacrylate: facilities.
Became law Sept. 27, 2026
SB 884
Elections in 2026 through 2029.
Became law Sept. 19, 2026
SB 623
Automobile accidents: civil actions: transportation network companies.
Became law June 25, 2026
SB 36
Price gouging: state of emergency.
Vetoed March 2, 2026
SB 25
Antitrust: premerger notification.
Became law Feb. 10, 2026
SB 645
Juries: peremptory challenges.
Became law Oct. 11, 2025
SB 54
Court fee waivers: veterans.
Became law Oct. 11, 2025
SB 447
Workers’ compensation: death benefits.
Became law Oct. 11, 2025
SB 37
Attorneys: unlawful solicitations and advertisements.
Became law Oct. 11, 2025
SB 27
Community Assistance, Recovery, and Empowerment (CARE) Court Program.
Became law Oct. 10, 2025
SB 312
Dog importation: health certificates.
Became law Oct. 9, 2025
SB 85
Civil actions: service of summons.
Became law Oct. 6, 2025
SB 83
State Department of Health Care Services: substance abuse treatment: disclosures.
Became law Oct. 6, 2025
SB 82
Contracts: consumer goods and services: dispute resolution provisions.
Became law Oct. 6, 2025
SB 576
Video streaming services: commercial advertisements.
Became law Oct. 6, 2025
SB 253
State Bar of California.
Became law Oct. 6, 2025
SB 42
Political Reform Act of 1974: public campaign financing: California Fair Elections Act of 2026.
Became law Oct. 2, 2025
SB 398
Election crimes: payment based on voting or voter registration.
Became law Oct. 2, 2025
SB 47
February 2025 bar exam: audit.
Became law Oct. 1, 2025
SB 66
Civil discovery.
Became law July 14, 2025
SB 26
Civil actions: restitution for or replacement of a new motor vehicle.
Became law April 2, 2025

Budget projects

California's Budget Act doesn't name the legislator who asked for an item, so there's no budget figure for California legislators.

Contested votes where they split

7 against the Senate President pro Tem; 7 against most of their party.

Contested votes where they split: Tom Umberg
DateBill and motion Their voteSenate President pro TemMost of their party
Aug. 25, 2026 AB 2005: Housing developments: urban lot split: owner-occupancy.
Third Reading
Nay Yea (split) Yea (split)
May 27, 2026 SB 1105: Law enforcement.
Third Reading
Nay Yea (split) Yea (split)
Jan. 26, 2026 SB 694: Deceptive practices: service members and veterans.
Taken Up Without Reference to File
Nay Yea (split) Yea (split)
Sept. 12, 2025 AB 1231: Criminal procedure: Safer Communities Through Opportunities Act.
Third Reading
Nay Yea (split) Yea (split)
Sept. 11, 2025 AB 699: Elections: local tax measures.
Third Reading
Nay Yea (split) Yea (split)
Sept. 10, 2025 SB 634: Local government: homelessness.
Concurrence in Assembly Amendments
Nay Yea (split) Yea (split)
Sept. 4, 2025 AB 321: Misdemeanors.
Third Reading
Nay Yea (split) Yea (split)

Every roll call

How Tom Umberg voted on each of the 3,677 floor roll calls while in office, newest first.

Every roll call: Tom Umberg
DateVoteTheir vote Most of their partySenate President pro TemYeas–nays
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Contested and party-line votes link to their own pages; the rest link to the official record.

Contact, committees and caucuses

Contact

Official page
www.senate.ca.gov
Email
senator.umberg@senate.ca.gov
Capitol office
1021 O St. Suite 7510, Sacramento, CA 95814
916-651-4034
District office
1000 E. Santa Ana Blvd. Suite 220B, Santa Ana, CA 92701
714-558-3785

Committees

  • Judiciary Chair
  • Business, Professions and Economic Development
  • Elections and Constitutional Amendments
  • International Sporting Events: Olympics and World Cup Soccer Special
  • Military and Veterans Affairs
  • Privacy, Digital Technologies and Consumer Protection

Contact details and committee assignments from Open States' data on the California Legislature, which it collects from the chambers' websites, as of Oct. 15, 2026.

Source: the California Legislature's floor vote records, Dec. 2, 2024 to Sept. 1, 2026. How these numbers work · Corrections