California Assembly · District 21
Diane Papan
Where they sit
Every current Assembly member, placed from most liberal to most conservative by how they voted on contested bills.
Diane Papan'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
On the November 3 ballot
Running for California Assembly District 21.
Also on the ballot: Jabra J Muhawieh (Republican)
The scores
How these numbers work →Each tick is a current Assembly member, by party; the dot is Diane Papan.
Each tick is a current Assembly member, by party; the dot is Diane Papan.
Bills
The bills Diane Papan sponsored this term and how far they got. Co-sponsors aren’t counted.
| Bills | |
|---|---|
| Sponsored | 35 |
| Passed both chambers | 16 |
| Became law | 13 |
| Vetoed by the Governor | 3 |
Rank by bills passed: Rank 35 of 79 in the Assembly (tied with 7 others) · 35 of 60 Democrats (tied with 5 others)
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
| Bill | Result | Final action |
|---|---|---|
| AB 2595 San Mateo Electric Bicycle Safety Pilot Program. |
Became law | Sept. 30, 2026 |
| AB 2234 California Environmental Quality Act: geothermal exploratory projects. |
Became law | Sept. 30, 2026 |
| AB 2296 Planning and zoning: housing element: regional housing needs allocation. |
Became law | Sept. 29, 2026 |
| AB 501 Lawsuits, liens, and other encumbrances. |
Became law | Sept. 27, 2026 |
| AB 1931 Insurance: home protection companies. |
Became law | Sept. 27, 2026 |
| AB 2619 Water resources: data centers. |
Became law | Sept. 21, 2026 |
| AB 2469 Data centers: water use disclosures. |
Became law | Sept. 21, 2026 |
| AB 2380 Pest control: registration fees. |
Became law | Sept. 20, 2026 |
| AB 2111 Electricity: transmission planning and transmission facilities. |
Became law | Sept. 20, 2026 |
| AB 93 Water resources: data centers. |
Vetoed | Jan. 22, 2026 |
| AB 650 Planning and zoning: housing element: regional housing needs allocation. |
Vetoed | Jan. 22, 2026 |
| AB 527 California Environmental Quality Act: geothermal exploratory projects: geothermal field development projects: enhanced geothermal system wells. |
Vetoed | Jan. 22, 2026 |
| AB 1250 Transit operators: paratransit: recertification of eligibility. |
Became law | Oct. 13, 2025 |
| AB 411 Livestock carcasses: disposal: composting. |
Became law | Oct. 11, 2025 |
| AB 60 Cosmetic safety. |
Became law | Oct. 7, 2025 |
| AB 900 Environmental protection: 30x30 goals: land conservation: stewardship. |
Became law | Oct. 6, 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
1 against the Speaker; 1 against most of their party.
| Date | Bill and motion | Their vote | Speaker | Most of their party |
|---|---|---|---|---|
| June 3, 2025 | AB 1240: Single-family residential real property: corporate entity: ownership. Third Reading |
Nay | Yea (split) | Yea (split) |
Every roll call
How Diane Papan voted on each of the 4,006 floor roll calls while in office, newest first.
| Date | Vote | Their vote | Most of their party | Speaker | Yeas–nays |
|---|---|---|---|---|---|
| Loading… | |||||
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.assembly.ca.gov
- assemblymember.papan@assembly.ca.gov
- Capitol office
- Room 4220, 1021 O St. P.O. Box 942849, Sacramento, CA 94249
916-319-2021 - District office
- 1528 S. El Camino Real Suite 302, San Mateo, CA 94402
650-349-2200
Committees
- Community Reinvestment Select Chair
- Water, Parks and Wildlife Chair
- Fisheries and Aquaculture Vice chair
- Alternative Protein Innovation Select
- Biotechnology and Medical Technology Select
- Environmental Safety and Toxic Materials
- Housing Construction Innovation Select
- Housing Construction Innovation Select
- Judiciary
- Ports and Goods Movement Select
- Select Committee on California and Armenia Mutual Trade, Art, and Cultural Exchange
- Select Committee on Growing and Retaining the Creative Economy in California
- Transportation
- Utilities and Energy
- Youth Mental Health and Treatment Accessibility Select
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