electionsmcp › races › California State House District 21
California State House District 21
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how California actually voted.
Model California State House District 21 →
Current officeholder
Diane Papan Democratic
2024 result
Democratic D+47.7
2024 votes cast
199,509
Office
State House
Precinct results — 2024 general
161 precincts reported in California State House District 21's 2024 general election. The twenty largest:
| Precinct | Winner | Margin | Votes |
|---|---|---|---|
| 06081-26046 | Democratic | D+50.6 | 2,810 |
| 06081-36021 | Democratic | D+47.9 | 2,807 |
| 06081-26043 | Democratic | D+53.8 | 2,769 |
| 06081-37001 | Democratic | D+47.8 | 2,740 |
| 06081-14006 | Democratic | D+18.6 | 2,621 |
| 06081-26058 | Democratic | D+45.7 | 2,609 |
| 06081-26049 | Democratic | D+51.7 | 2,577 |
| 06081-26036 | Democratic | D+40.0 | 2,545 |
| 06081-26052 | Democratic | D+48.0 | 2,496 |
| 06081-26030 | Democratic | D+56.0 | 2,416 |
| 06081-36009 | Democratic | D+55.6 | 2,408 |
| 06081-26008 | Democratic | D+44.9 | 2,396 |
| 06081-26026 | Democratic | D+57.8 | 2,392 |
| 06081-22010 | Democratic | D+45.1 | 2,362 |
| 06081-22008 | Democratic | D+40.6 | 2,360 |
| 06081-46006 | Democratic | D+59.1 | 2,345 |
| 06081-15006 | Democratic | D+22.5 | 2,302 |
| 06081-12003 | Democratic | D+37.2 | 2,297 |
| 06081-18006 | Democratic | D+46.7 | 2,281 |
| 06081-18008 | Democratic | D+51.4 | 2,265 |
All 161 precincts are modelable — open the race in the simulator and drill to precinct grain.
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model California State House District 21 in five steps
- Set the candidates. Name the contenders for the California State House District 21 (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
- Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.
Open California State House District 21 in the simulator →
Frequently asked
Who represents California State House District 21?
Diane Papan (Democratic) currently holds this State House seat.
What was the 2024 result in California State House District 21?
D+47.7 — 147,291 Democratic, 52,218 Republican, of 199,509 votes cast.
Can I model this race myself?
Yes — open it in the electionsmcp simulator and model vote-share swing and turnout from the real 2024 baseline, down to the precinct, then roll it up to chamber control.