100% of the itemized money from individuals in the 2026 cycle came from donors with an address in California. Ranks 73rd of 714, where 1st is the highest share. 36 itemized donors.
Only donors who give more than $200 are reported with an address, so this is the share of that itemized money from donors living in California, ranked among State Senate Democrats. Small gifts are not counted either way. Candidates running statewide or for federal office often draw more money from out of state.
At a glance
6 measures against the California Senate. Pierson reported $289.6K in the 2026 cycle, in the top quarter of State Senate Democrats (median $55.5K). Pierson sits at −0.82 on the CSIP scale, more liberal than 74% of State Senate Democrats.
The measures on which Pierson sits furthest from the middle of the California Senate, each against the same group, with the CSIP score when there is one. Every number is explained in its own section below.
Party unity
California Senate average 98.7% · ranks 4th of 39 · 4 votes against the majority of California Senate Democrats
From California, 2026
Of itemized individual dollars · ranks 73rd of 714 State Senate Democrats
Itemized, 2026
State Senate Democrats’ median $55.5K · ranks 103rd of 746
CSIP ideology
More liberal than 74% of State Senate Democrats · ± 0.07
Out of committee
California Senate average 88% · ranks 12th of 39
Attendance
California Senate average 93.8% · ranks 21st of 39 · 3,673 roll calls
Peer group: California Senate. Rank 1 is the highest value in the group; the thick bar is Pierson, the thin grey bar the peer average. The headline is the measure on which Pierson is most unusual among peers (Methods, §08).
What Pierson says
No statements for the CA 2025–26 session.No classified statements (posts, press releases, newsletters, floor speeches) in this time window.
Policy
No policy statements for the CA 2025–26 session.No classified statements (posts, press releases, newsletters, floor speeches) in this time window.
Ideology
Pierson sits at −0.82 on the CSIP scale, left of 0, more liberal than 74% of State Senate Democrats. Approximate range −0.89 to −0.75, which understates the uncertainty; from 449 donors and 848 roll calls.
CSIP, the lab’s Common-Space Ideal Point, places every official, federal and state, on one left–right scale, estimated from roll-call votes, who gives money to whom, and the text of statements. Negative is left of 0, positive right of it; 0 is the centre of the scale, not a definition of “moderate”.
CSIP ideal point
Approximate range −0.89 to −0.75. From 449 donors and 848 roll calls. Run 2026-10-25T215945. Blue is left of 0, red right of 0.
The outlined dot is Pierson, coloured by its side of 0 (blue left, red right, deeper further out); the bar through it is the approximate range (±1.96 standard errors), which understates the uncertainty; the grey ticks below are the medians of Pierson’s groups. 0 is the centre of the scale, not “moderate” by definition.
What this means, and what it doesn’t
The score summarises how an official votes, who funds them and how they talk, relative to everyone else. It does not grade positions as good or bad, and two officials with the same score can differ on any single issue. The ± range is 1.96 standard errors, which understates the uncertainty: scores whose ranges overlap may not differ at all, and even scores whose ranges do not overlap may not differ.
Where Pierson sits
Every official in each group, on the CSIP scale
Show the data
| Group | Officials | Median | Share left of Pierson |
|---|---|---|---|
| State Senate Democrats | 825 | −0.7 | 26% |
| California Senate | 39 | −0.7 | 33% |
| All State Senate | 1909 | +0.1 | 11% |
How to read the strips
Every small dot is one official on the same scale, coloured by its own score (blue left of 0, red right of 0, grey at 0, deeper further out) and spread up and down only to keep dots apart; where a group is crowded the dots overlap, and darker patches mean more officials. The large outlined dot is Pierson in every row; the rule is each group’s median. The table under the figure gives the share of each group to the left of Pierson.
Money
Pierson reported $289.6K in the 2026 cycle, 5.2 times the State Senate Democrats’ median of $55.5K. State filings report no small-donation total. 100% of itemized individual money came from California.
Campaign money from state campaign-finance filings, as aggregates only; the lab never shows an individual donor. Campaigns must report by name every person who gives them more than $200 in a cycle (“itemized”); smaller gifts are reported only as one total (“unitemized”), so donor counts, donor states, employers and occupations describe itemized donors only. State filings report no small-gift total, so these figures add up itemized contributions only.
itemized in the 2026 cycle
From 36 itemized donors. State Senate Democrats’ median $55.5K.
Where the money came from
Each square is one percent of itemized contributions in the 2026 cycle.
- Individuals (itemized)18 squares$53.2K
- PACs and other committees82 squares$236.5K
Show the data
| Source | Amount | Share |
|---|---|---|
| Individuals (itemized) | $53.2K | 18.4% |
| PACs and other committees | $236.5K | 81.6% |
What this means, and what it doesn’t
Totals say how much a campaign took in, not how it was spent, and they rise sharply when a seat is up for election; compare cycles with that in mind.
Receipts by cycle
Itemized contributions, 2022 to 2026. The grey line is the State Senate Democrats’ median for 2026.
Show the data
| Item | Value |
|---|---|
| 2022 cycle | $874.0K |
| 2024 cycle | $708.7K |
| 2026 cycle | $289.6K |
Top donor states, 2026
Itemized contributions by donor state. 100% came from California.
- California$53.2K
Small donations
State filings report no total for small gifts.
Not reported in state filings.
Where itemized donors live
Individuals who gave more than $200, by donor state
Show the data
| State | Value |
|---|---|
| California | $53.2K |
| Alaska | No data |
| Maine | No data |
| Vermont | No data |
| New Hampshire | No data |
| Washington | No data |
| Idaho | No data |
| Montana | No data |
| North Dakota | No data |
| Minnesota | No data |
| Illinois | No data |
| Wisconsin | No data |
| Michigan | No data |
| New York | No data |
| Rhode Island | No data |
| Massachusetts | No data |
| Oregon | No data |
| Nevada | No data |
| Wyoming | No data |
| South Dakota | No data |
| Iowa | No data |
| Indiana | No data |
| Ohio | No data |
| Pennsylvania | No data |
| New Jersey | No data |
| Connecticut | No data |
| Utah | No data |
| Colorado | No data |
| Nebraska | No data |
| Missouri | No data |
| Kentucky | No data |
| West Virginia | No data |
| Virginia | No data |
| Maryland | No data |
| Delaware | No data |
| Arizona | No data |
| New Mexico | No data |
| Kansas | No data |
| Arkansas | No data |
| Tennessee | No data |
| North Carolina | No data |
| South Carolina | No data |
| District of Columbia | No data |
| Oklahoma | No data |
| Louisiana | No data |
| Mississippi | No data |
| Alabama | No data |
| Georgia | No data |
| Hawaii | No data |
| Texas | No data |
| Florida | No data |
itemized donors
People who gave more than $200
from California
Of itemized individual dollars
How to read the map
Every state the same size. Darker states gave more itemized money; hatched states had no itemized donors; the outlined state is California. Gifts of $200 or less carry no address and are left out.
Top donor occupations
Itemized, 2026 cycle.
- CHIEF EXECUTIVE OFFICER$8,500 4 donors
- RETIRED$7,900 3 donors
- NOT EMPLOYED$7,160 8 donors
Top committees
PAC and committee contributions, 2026 cycle.
- CALIFORNIA ASSOCIATION OF HEALTH FACILITIES LOS ANGELES REGION PAC$11.8K
- CALIFORNIA ASSOCIATION OF HEALTH FACILITIES NORTHERN REGION PAC$11.8K
- CALIFORNIA ASSOCIATION OF HEALTH FACILITIES SOUTHERN REGION PAC$11.8K
- CALPAC - CALIFORNIA MEDICAL ASSOCIATION PAC$11.8K
- GREATER ANESTHESIA SERVICE AND PAC$11.8K
Top employers
Itemized, 2026 cycle.
- UNIVERSITY OF CALIFORNIA, SAN DIEGO$1,850 3 donors
Aggregates only. Individual donors are never named.
Votes
Pierson voted with the majority of California Senate Democrats on 100% of party-line votes and missed 4.7% of 3,673 roll calls. California Senate on average: 98.7% party unity, 93.8% attendance. Across all roll calls, Pierson voted against the majority of California Senate Democrats 4 times.
3,673 roll calls Pierson could vote on in the CA 2025–26 session, compared with California Senate. Attendance is the share with a vote recorded. Party unity counts only party-line roll calls, where most Democrats and most Republicans voted on opposite sides, and is the share of those where Pierson voted with the majority of California Senate Democrats. The count of votes against that majority covers every roll call where the majority took a side.
votes against the majority of California Senate Democrats
Party unity 100%, California Senate average 98.7%, ranks 4th of 39. 3,673 roll calls in the CA 2025–26 session.
Attendance and party unity
The thick bar is Pierson, the thin grey bar the California Senate average. The scale runs from 80% to 100% to show the gap.
Show the data
| Row | Pierson | Peers |
|---|---|---|
| Attendance | 95.3% | 93.8% |
| Party unity | 100% | 98.7% |
What this means, and what it doesn’t
A missed roll call has many causes, from illness to campaigning, so attendance says how often, not why. A vote against the majority can be on procedure as well as substance, and many fall on roll calls where both parties split; the key votes below show the ones that decided something.
Key votes
25 roll calls the lab flagged as key in the CA 2025–26 session
| Party split (yea–nay) | Why it’s key | |||||
|---|---|---|---|---|---|---|
| Sep 1, 2026 | Yea | With majority | pass | D 29–0 · R 0–4Democrats 29 yea, 0 nay; Republicans 0 yea, 4 nay | became law | |
| Aug 31, 2026 | Yea | With majority | pass | D 22–5 · R 0–9Democrats 22 yea, 5 nay; Republicans 0 yea, 9 nay | party crossover | |
| Aug 31, 2026 | Yea | With majority | pass | D 25–1 · R 4–4Democrats 25 yea, 1 nay; Republicans 4 yea, 4 nay | became law | |
| Aug 31, 2026 | Yea | With majority | pass | D 30–0 · R 10–0Democrats 30 yea, 0 nay; Republicans 10 yea, 0 nay | became law | |
| Aug 31, 2026 | AB 2694 Public postsecondary education: community colleges: statewide baccalaureate degree program. 3rd Reading AB2694 Alvarez et al. By Cabaldon | Yea | With majority | pass | D 27–0 · R 6–1Democrats 27 yea, 0 nay; Republicans 6 yea, 1 nay | became law |
How key votes are chosen
Automatically: a final-passage or override vote where the measure became law, the margin was under 10%, at least 10% of either party voted against its majority, or the bill was among the 25 most mentioned in officials’ own statements. Up to 25 per window, most recent first; five are shown. Bars show yea on the left, nay on the right, per party.
Votes most often with
The colleagues who voted the same way as Pierson most often
- Sasha PérezD3,372 shared votes100%
- Monique LimónD3,300 shared votes100%
- Mike McGuireD3,491 shared votes100%
- John LairdD3,491 shared votes100%
- Jesse ArreguínD3,463 shared votes100%
Votes least often with
The colleagues who voted the same way as Pierson least often
- Marie Alvarado-GilR2,974 shared votes73%
- Kelly SeyartoR3,233 shared votes74%
- Tony StricklandR3,265 shared votes75%
- Brian JonesR3,137 shared votes75%
- Shannon GroveR3,157 shared votes76%
How to read the agreement lists
The share of roll calls both members voted on where they voted the same way, among colleagues sharing at least 50 such votes. High agreement with members of the other party is common on routine votes.
Full voting record
CA 2025–26 session, loads in batches
Legislation
Pierson sponsored 52 bills in the CA 2025–26 session; 32 became law. Cosponsored 134 others. 96% of sponsored bills got out of committee (California Senate average 88%; 12th of 39).
The bills Pierson sponsored and cosponsored in the CA 2025–26 session, from the official bill records, and how far each got: introduced, referred to or acted on in committee, passed one chamber, passed both, became law. A bill counts at every stage it has reached, so the blocks only shrink to the right.
Bills by stage
Counts for the CA 2025–26 session
Show the data
| Role | Introduced | In committee | Passed one chamber | Passed both chambers | Became law |
|---|---|---|---|---|---|
| Sponsored | 52 | 52 | 44 | 34 | 32 |
| Cosponsored | 134 | 133 | 121 | 97 | 87 |
How to read the blocks
Ink blocks are bills Pierson sponsored, ochre blocks bills Pierson cosponsored; the figure above each block is the count. Most bills in any legislature never leave committee, so a short staircase is the norm.
of sponsored bills got out of committee
California Senate average 88%. Ranks 12th of 39.
Cosponsorship partners
Colleagues who most often cosponsor with Pierson, by number of shared bills in the CA 2025–26 session; the square shows their party.
- Laura Richardson46
- Lola Smallwood-Cuevas39
- Mia Bonta33
- Sade Elhawary27
- Isaac Bryan26
What this means, and what it doesn’t
The score is the share of sponsored bills that a committee reported out or a chamber passed, with at least 5 sponsored bills, ranked within the peer group. Members of the majority party and committee chairs move more bills, so the rank reflects position in the chamber as well as effort. Cosponsorship partners are the five colleagues who share the most of Pierson’s bills; the toggle shows more.
Bill list
Sponsored and cosponsored, with status and policy area; five are shown, the toggle shows the rest
| SR 128 | Relative to California Neuroblastoma Awareness Day. | Cosponsor | Aug 3, 2026 | Passed one chamber | Unassigned | Read. Adopted. (Ayes 37. Noes 0. Page 5350.) Aug 13, 2026 |
| SR 129 | Relative to Women's Equality Day. | Cosponsor | Aug 3, 2026 | Passed one chamber | Unassigned | Read. Adopted. (Ayes 36. Noes 0. Page 5359.) Aug 13, 2026 |
| SR 123 | Relative to medically supportive food and nutrition services. | Sponsor | Jul 2, 2026 | Passed one chamber | Health(model) | Read. Adopted. (Ayes 36. Noes 0. Page 5358.) Aug 13, 2026 |
| SR 124 | Relative to Ovarian Cancer Awareness Month of 2026. | Sponsor | Jul 2, 2026 | Passed one chamber | Unassigned | Read. Adopted. (Ayes 39. Noes 0. Page 5319.) Aug 10, 2026 |
| SR 121 | Relative to the Killed in Action flag. | Cosponsor | Jun 29, 2026 | Passed one chamber | Unassigned | Read. Adopted. (Ayes 40. Noes 0. Page 5309.) Aug 10, 2026 |
Online
A site that changed 29 times in 90 days. Pierson’s official site had 39 pages when last crawled on Sep 1, 2026.
The lab crawls Pierson’s official and campaign websites (weekly for Congress, monthly for the states) and keeps every page’s text, so changes can be read later; it also records social accounts and describes the images Pierson posts with a vision model.
Websites
- 39
pages crawled
29changes in 90 days
- 30
pages crawled
10changes in 90 days
How to read the counts
“Pages crawled” is the size of the site at the last crawl; “changes in 90 days” counts pages whose text differed from the previous crawl. Sites change for many routine reasons, such as new press releases, so a high count is not by itself notable.
Social accounts
Images Pierson posted
No images from Pierson’s posts have been described.
About the descriptions
Written by a vision model and may be wrong. Open the post to see the original. Five are shown; the toggle shows the rest.
State floor speeches
219 turns, Apr 19, 2021 to Sep 1, 2026
Floor speeches
Transcribed from chamber video or captions by the lab. They are not classified for kinds of statement.
Methods and sources
How this page was made. Profile built Oct 28, 2026; site last built Oct 28, 2026. Every number on the page is computed from the sources listed here, by the same rules for every official; nothing is written by hand.
The headline
The headline is the measure on which Pierson is most unusual among California Senate, chosen by one rule for every official of every party. The candidates are the rate of each kind of statement and of extreme labels, party unity, attendance, the small-donor share, the in-state share and total receipts of the latest cycle, the share of sponsored bills that got out of committee, talk-to-bills agreement, and the CSIP score’s place within the party group.
The builder ranks every measure within the same peer group the page compares it with, and writes each official’s percentile: the share of the group below the value, ties counting half, so 0.5 is the median and a value shared by many never ranks first. A measure’s score is how far that percentile sits from the median (0 in the middle, 0.5 at either end), and the highest score leads if it is above 0.25, outside the middle half of the group. Scores within 0.03 of each other are a tie, broken in this order: votes against the party majority, kinds of statement, ideology, roll calls missed, small donations, in-state money, legislation, agreement, extreme labels, receipts.
A measure counts only with at least 200 statements, 100 roll calls or 5 sponsored bills behind it and a peer group of at least 10. Two things never lead: high party unity or attendance, where most members sit, and a high rate of a kind of statement backed by fewer than 10 statements. When nothing qualifies, the headline is a neutral fact instead: statements classified, or years in office. The wording always names the direction (“in the bottom 5% of …”, “votes against the majority of …”).
Identifiers
- Profile id
- 6c2a35d5-c04c-44d0-8bd9-92a625e2b525
- Open States
- ocd-person/6c2a35d5-c04c-44d0-8bd9-92a625e2b525
Bulk files with the same data for every official:
Freshness of this profile’s data
- What politicians sayOct 27, 20261 days agoMembers of Congress: tweets since 2017; press releases, newsletters and floor speeches since 2022. State legislators: tweets since May 2024. Governors: tweets since January 2025. Labels from an LLM classifier.
- Roll calls (state)Oct 21, 20267 days agoOpen States floor roll calls, 2019 on (none for AK and MO).
- Bills (state)Oct 28, 2026todayOpen States bills and sponsors, 2019 on; stages from roll calls.
- Campaign money (state)no dateState campaign-finance agencies, 2019 on; aggregates only.
- Ideology (CSIP)Oct 25, 20263 days agoCommon-Space Ideal Points (CSIP), current validated run.
- WebsitesOct 25, 20263 days agoWeekly crawls of federal sites since April 2026; monthly state crawls since June 2026.
- State floor speechesOct 21, 20267 days agoState floor speech turns (published transcripts and captions), 2020 on; not LLM-classified.
How the measures work
- What politicians say
- Every post, press release, newsletter and congressional floor speech is read by a language model and marked for personal attacks, policy criticism, policy discussion, bipartisanship and credit claiming. A statement can be in several. Rates are shares of statements in the window. The methods paper.
- Extreme labels
- A statement has an extreme label when it calls a politician, party or policy “far left”, “far right”, “MAGA”, “extreme”, “radical”, “woke”, “fascist” or “communist”. The target is who the label is aimed at.
- Policy areas and agreement
- Statements and bills share 25 Congressional Research Service policy areas (state bills are assigned by a language model). Agreement is 1 − Jensen–Shannon distance between the two distributions, shown with at least 20 policy statements and 5 bills.
- Ideology (CSIP)
- Common-Space Ideal Points place federal and state officials on one left–right scale, estimated jointly from roll calls, campaign contributions and the text of statements, with standard errors. Only a validated run is shown. The methods paper.
- Campaign money
- Campaigns report by name only donors who give more than $200 in a cycle; smaller gifts are reported as one total. Federal totals and the small-donor share come from the FEC’s financial summaries of each campaign committee. Donor counts, donor states, employers and occupations cover itemized donors only. State filings report no small-gift totals, so state figures are itemized only. The lab never publishes donor names.
- Votes and key votes
- Attendance, party unity and the count of votes against the majority of an official’s own party come from roll calls (Voteview for Congress, chamber records for the states). Key votes are final-passage or override votes that became law, were decided by under 10%, saw at least 10% of a party vote against its majority, or concerned one of the 25 bills most mentioned in officials’ statements.
- Peers and ranks
- Comparisons are with the same party, chamber and level (for example House Democrats); state legislators are compared within their state and chamber for votes. Every comparison names its group. Rank 1 is the highest value in the group; tied values share the average of their ranks, and the percentile is the share of the group below the value, ties counting half.
America’s Political Pulse · Polarization Research Lab