Mike Thompson headshot
At a Glance
Seat
Representative for California District 4
Born
January 24, 1951
Age 75
Phone
(202) 225-3311
Office
268 Cannon House Office Building, Washington 20515
Congress Member Profile|U.S. Representative|Democrat|California District 4

Mike Thompson

Charles Michael Thompson is an American politician serving as the U.S. representative for California's 4th congressional district since 1999. The district, in the outer northern portion of the San Francisco Bay Area, includes all of Lake and Napa counties and parts of Contra Costa, Solano, Yolo and Sonoma counties. Thompson chairs the House Gun Violence Prevention Task Force. He is a member of the Democratic Party.

Source: WikipediaView full (CC BY-SA)
Voting Record — 496
Yes43%
No56%
Present1%
Not Voting1%
Party align98%
Cross-party2%
SoupScore
District Map

Congressional District 4

U.S. Census Bureau boundary data.
Mike Thompson headshot
Mike Thompson
U.S. RepresentativeDemocratCalifornia District 4
SoupScore
Mike's ATmosphere Activity
20 recent posts · 22 sponsored · 117 cosponsored
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Recent ATmosphere posts, sponsorships, and cosponsorships.

It’s #WildfireAwarenessWeek in California. Now is the time to start preparing for fire season. Please take steps to safeguard your home and create a plan of evacuation for you and your family. Thank you to all the local officials who are working to spread the word.
May is National Bike Month! Cycling is a fantastic way to stay healthy, reduce our environmental impact, and get around efficiently. As co-chair of the Congressional Bike Caucus, I’m proud to work on policies that support biking and make our roads safer.
Great to meet with Mark Stapp, the Mayor of Santa Rosa and Jeff Okrepkie, the Vice Mayor, to discuss creating tax credits for local governments to support much needed road, water, and power improvements both in California and across our country.
Honored to welcome veterans from the North Bay to our nation’s Capitol. North Bay Honor Flights provides veterans who served the chance to fly to Washington to visit the memorials dedicated to their service. Thanks for all you do to ensure our vets’ sacrifices are never forgotten.
Great visiting with the Brown Family at “The Ranch” this morning at Brown Estate. The three siblings Deneen, Coral, and David have done a fantastic job running this beautiful winery. It was insightful to hear from them about the challenges impacting our wine community.
Joined my colleagues in protesting the Trump Administration’s plans to destroy D.C.’s 15th street bike lane. It was a big win yesterday when a judge ruled that the Administration cannot proceed with their plans to destroy the beautiful route that over a million cyclist use yearly.
Thank you to the families of gun violence victims who put together the powerful “30 Under 30, 30 Victims of Gun Violence Under the Age of 30” magazine. These families carry their loss with them everywhere they go. We must remain committed to passing sensible gun violence prevention legislation.
Happy #EarthDay! For fifty-six years, we have celebrated this day to raise awareness for environmental issues and inspire action. As a life-long conservationist, I have and will continue to fight for our environment!
This Administration’s choice to overturn one of our most important environmental protections is devastating. Without the ability to regulate greenhouse gas pollution, it will be even harder to protect our environment from climate change. www.theregreview.org/2026/04/21/a...
Proud to have secured $3.15 million for the Habematolel Pomo of Upper Lake Tribe to build a community center providing educational and workforce training opportunities, meeting and event spaces, and partnership programs that will serve the entire Lake County community.
Rooting out fraud and holding those who commit it accountable is important. It's unacceptable that the President pardoned fraudsters who committed more than $1.6 billion in Medicare and Medicaid fraud.
Great to join local leaders and ride in another successful Picnic Day Parade. There’s nothing better than bringing people together at the largest student-run event in the nation to celebrate our communities, local businesses, and the work of UC Davis students and professors.
Mike Thompson smiling with a UCD representative
Group photo with Davis International House
Group photo
Group photo in front of a double decker bus
27 years ago, 13 people were senselessly killed at Columbine High School. Today, we hold the Columbine community close and remember their legacy. We must continue our work to pass sensible legislation to keep firearms out of the hands of people who are a danger to themselves or others.
Great to join Napa Earth Day to celebrate our planet! Climate change is one of the most pressing issues facing us, and I will continue to work to conserve our beautiful lands, lower emissions, and protect our planet.
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Voting History
496 total votes
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Recent roll calls with party-majority context so it is easier to scan how this member tends to vote.

DateBillQuestionPositionParty MajAlign?Result
2025-11-19H. Res. 888 (119th)Approve resolutionNONOFailed
2025-11-19S.J. Res. 80 (119th)Final passageNONOPassed
2025-11-19H.J. Res. 131 (119th)Final passageNONOPassed
2025-11-19H.J. Res. 130 (119th)Final passageNONOPassed
2025-11-18H. Res. 888 (119th)Motion to ReferYESYESFailed
2025-11-18H. Res. 878 (119th)Approve resolutionNONOPassed
2025-11-18H. Res. 879 (119th)Approve resolutionNONOPassed
2025-11-18H. Res. 879 (119th)End debate nowNONOPassed
2025-11-18H.R. 4405 (119th)Fast-track passageYESYESPassed
2025-11-18H. Res. 878 (119th)Kill the motionYESYESFailed
2025-11-18H.R. 2659 (119th)Fast-track passageYESYESPassed
2025-11-17H.R. 1608 (119th)Fast-track passageYESYESPassed
2025-11-13H.R. 5371 (119th)Accept Senate changesNONOPassed
2025-11-12H. Res. 873 (119th)Approve resolutionNONOPassed
2025-09-19H. Res. 719 (119th)Approve resolutionPRESENTYESPassed
2025-09-19H.R. 5371 (119th)Final passageNONOPassed
2025-09-19H.R. 5371 (119th)Send back to committeeYESYESFailed
2025-09-18H.R. 1047 (119th)Final passageNONOPassed
2025-09-18H.R. 3015 (119th)Final passageNONOPassed
2025-09-18H.R. 3062 (119th)Final passageNONOPassed
2025-09-17H. Res. 713 (119th)Kill the motionYESYESPassed
2025-09-17H.R. 5143 (119th)Final passageNONOPassed
2025-09-17H.R. 5125 (119th)Final passageNONOPassed
2025-09-17H. Res. 722 (119th)Approve resolutionNONOPassed
2025-09-17H. Res. 722 (119th)End debate nowNONOPassed
2025-09-16H.R. 5140 (119th)Final passageNONOPassed
2025-09-16H.R. 4922 (119th)Final passageNONOPassed
2025-09-16H.R. 2721 (119th)Fast-track passageYESYESPassed
2025-09-16H. Res. 707 (119th)Approve resolutionNONOPassed
2025-09-16H. Res. 707 (119th)End debate nowNONOPassed
2025-09-15H.R. 3400 (119th)Fast-track passageYESYESPassed
2025-09-15H.J. Res. 117 (119th)Kill the motionNONOPassed
2025-09-11H.R. 3486 (119th)Final passageNONOPassed
2025-09-11H.R. 3944 (119th)Instruct negotiatorsYESYESFailed
2025-09-10H.R. 3838 (119th)Final passageNONOPassed
2025-09-10H.R. 3838 (119th)Send back to committeeYESYESFailed
2025-09-10H.R. 3838 (119th)Approve amendmentYESYESAgreed to
2025-09-10H.R. 3838 (119th)Approve amendmentNONOFailed
2025-09-10H.R. 3838 (119th)Approve amendmentNONOAgreed to
2025-09-10H.R. 3838 (119th)Approve amendmentNONOFailed
2025-09-10H.R. 3838 (119th)Approve amendmentNONOFailed
2025-09-10H.R. 3838 (119th)Approve amendmentNONOFailed
2025-09-10H.R. 3838 (119th)Approve amendmentNONOFailed
2025-09-10H.R. 3838 (119th)Approve amendmentNONOAgreed to
2025-09-10H.R. 3838 (119th)Approve amendmentNONOAgreed to
2025-09-10H.R. 3838 (119th)Approve amendmentNONOAgreed to
2025-09-10H.R. 3838 (119th)Approve amendmentNONOFailed
2025-09-10H.R. 3838 (119th)Approve amendmentNONOAgreed to
2025-09-10H.R. 3838 (119th)Approve amendmentNONOAgreed to
2025-09-10H.R. 3838 (119th)Approve amendmentNONOAgreed to

Alignment stats consider only votes where a clear yes/no majority existed for the legislator's party. Cross-party marks divergence where the vote matched the opposite party majority. ↔ indicates cross-party divergence.

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