Probolsky Research, LLC
Probolsky Research, LLC is a political services vendor. In the 2025-2026 cycle Probolsky Research, LLC was paid $110K across 50 client committees, of which $108K flowed through Independent Expenditures rather than direct committee payments.
Part I Identity
Stable facts about this entity. These figures do not change as you adjust the timeframe in Part II.
Source split
| Schedule B direct committee payments |
$567,350 | 88 rows | 84.0% |
| Independent Expenditures money this entity spent supporting candidates, NOT a committee paying them |
$107,835 | 6 rows | 16.0% |
- Activity span ALL TIME
- Jan 14, 2014 → Feb 24, 2026
- spans 12.1 years
- Disbursements ALL TIME
- 88
- Schedule B + IE rows
- Client committees ALL TIME
- 50
- distinct payers
Part II Activity in selected window
One timeframe control governs all three panels below. Change it once and the trajectory, top buyers, and party breakdown all update together.
Spend trajectory
Monthly spend to this vendor over the last 12 months.
Top buyers
Two views of the same data — diagram and table share the time-window control and the same top-buyers slice. Click "View all buyers in research" to drill in with the matching date range.
No buyer activity in this window.
No buyer activity in this window.
Top buyers last 6 months · top 1
| Filer | Total spend | Disbursements |
|---|---|---|
| EAST BAY WORKING FAMILIES, A COALITION OF UNIONS AND COMMUNITY GROUPS 1390351 |
$15,000 | 1 |
Top buyers last 12 months · top 4
| Filer | Total spend | Disbursements |
|---|---|---|
| NEWSOM BALLOT MEASURE COMMITTEE; SAFETY FOR ALL, YES ON PROP. 63, 1380675 |
$46,000 | 1 |
| EAST BAY WORKING FAMILIES, A COALITION OF UNIONS AND COMMUNITY GROUPS 1390351 |
$15,000 | 1 |
| BARRERA FOR SUPERINTENDENT OF PUBLIC INSTRUCTION 2026 1478161 |
$2,900 | 1 |
| ALLEN FOR INSURANCE COMMISSIONER 2026; BEN 1483889 |
$2,400 | 1 |
Top buyers last 18 months · top 4
| Filer | Total spend | Disbursements |
|---|---|---|
| NEWSOM BALLOT MEASURE COMMITTEE; SAFETY FOR ALL, YES ON PROP. 63, 1380675 |
$46,000 | 1 |
| EAST BAY WORKING FAMILIES, A COALITION OF UNIONS AND COMMUNITY GROUPS 1390351 |
$15,000 | 1 |
| BARRERA FOR SUPERINTENDENT OF PUBLIC INSTRUCTION 2026 1478161 |
$2,900 | 1 |
| ALLEN FOR INSURANCE COMMISSIONER 2026; BEN 1483889 |
$2,400 | 1 |
Top buyers last 24 months · top 4
| Filer | Total spend | Disbursements |
|---|---|---|
| NEWSOM BALLOT MEASURE COMMITTEE; SAFETY FOR ALL, YES ON PROP. 63, 1380675 |
$46,000 | 1 |
| EAST BAY WORKING FAMILIES, A COALITION OF UNIONS AND COMMUNITY GROUPS 1390351 |
$15,000 | 1 |
| BARRERA FOR SUPERINTENDENT OF PUBLIC INSTRUCTION 2026 1478161 |
$2,900 | 1 |
| ALLEN FOR INSURANCE COMMISSIONER 2026; BEN 1483889 |
$2,400 | 1 |
By party
Revenue by party
| Party | Amount | % |
|---|---|---|
| Democratic | $3,326 | 3.02% |
| Republican | $745 | 0.68% |
| Non-partisan | $106,165 | 96.31% |
Part III Reference tables
Full all-time and cycle-to-date data.
Cycle-over-cycle trajectory
current cycle earlier election cycle off-cycle year quarterly · 7 years
| Year | Q | Cycle | Total | Txns | Top buyer · share | Top category · share | Cum. (cycle) | YoY % |
|---|---|---|---|---|---|---|---|---|
| 2018 | Q3 | 2018 | $1K | 1 | CALIFORNIANS FOR SAFE DRINK… 100% | Other / Unclassified 100% | $1K | — |
| 2018 | Q4 | 2018 | $16K | 6 | GAINES FOR SENATE 2020; BETH 63% | Other / Unclassified 85% | $17K | — |
| 2020 | Q2 | 2020 | $8K | 1 | CLEAN COASTS, CLEAN WATER, … 100% | Other / Unclassified 100% | $8K | — |
| 2020 | Q3 | 2020 | $18K | 1 | CALIFORNIANS FOR EQUAL RIGH… 100% | Other / Unclassified 100% | $25K | +1358% |
| 2021 | Q1 | 2020 | $5K | 1 | CLEAN COASTS, CLEAN WATER, … 100% | Other / Unclassified 100% | $30K | — |
| 2021 | Q4 | 2020 | $3K | 1 | GLAZER; CITIZENS FOR A BETT… 100% | Other / Unclassified 100% | $33K | — |
| 2022 | Q1 | 2022 | $21K | 2 | CHA FOR OC JUDGE 2022 82% | Other / Unclassified 82% | $21K | — |
| 2022 | Q4 | 2022 | $17K | 1 | NAIOP IE PAC - NATIONAL ASS… 100% | Other / Unclassified 100% | $38K | — |
| 2024 | Q1 | 2024 | $17K | 1 | SIMON, LATEEFAH 100% | Strategy & Research 100% | $17K | -20% |
| 2025 | Q4 | 2024 | $51K | 3 | NEWSOM BALLOT MEASURE COMMI… 90% | Strategy & Research 90% | $68K | — |
| 2026 | Q1 | 2026 | $15K | 1 | EAST BAY WORKING FAMILIES, … 100% | Other / Unclassified 100% | $15K | -10% |
Revenue by service category
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No category revenue in this window.
No category revenue in this window.
| Category | Total spend | Txns | Avg check | % of total | Top buyer · share | Last paid |
|---|---|---|---|---|---|---|
| Other / Unclassified | $452,590 | 67 | $7K | 81.9% | 810163 9% | 4mo ago |
| Strategy & Research | $109,010 | 14 | $8K | 19.7% | NEWSOM BALLOT MEASURE COMMI… 42% | 7mo ago |
| Media | $2,150 | 3 | $717 | 0.4% | TUCK FOR SUPERINTENDENT OF … 56% | 7y ago |
| Contributions & Transfers | -$11,000 | 3 | $-4K | -2.0% | TUCK FOR SUPERINTENDENT OF … 0% | 7y ago |
Client retention
Sticky-relationship signal: how many clients keep coming back across cycles vs one-time buyers.
Geographic concentration
Where this vendor's clients are based — federal committees by state, plus implicit jurisdiction for CA and TX state filers.
| State | Total spend | % of revenue | Clients | |
|---|---|---|---|---|
| CA | $567,350 | 100.0% | 50 |
Notable disbursements
5 largest all-time · 5 largest in the current cycle · 5 most recent. Each row earns its place.
| Reason | Date | Filer | Category | Purpose | Amount |
|---|---|---|---|---|---|
| Largest all-time | 2025-10-23 | NEWSOM BALLOT MEASURE COMMITTEE; SAFETY FOR ALL, YES ON PROP. 63, | Strategy & Research | Research | $46,000 |
| Largest all-time | 2006-02-10 | HARKEY FOR STATE SENATE, DIANE | Other / Unclassified | — | $21,900 |
| Largest all-time | 2020-09-06 | CALIFORNIANS FOR EQUAL RIGHTS, NO ON 16 | Other / Unclassified | — | $17,500 |
| Largest all-time | 2022-10-26 | NAIOP IE PAC - NATIONAL ASSOCIATION OF INDUSTRIAL & OFFICE PROPERTIES INLAND EMPIRE PAC | Other / Unclassified | — | $17,200 |
| Largest all-time | 2022-03-08 | CHA FOR OC JUDGE 2022 | Other / Unclassified | — | $17,200 |
| Largest this cycle | 2026-01-16 | EAST BAY WORKING FAMILIES, A COALITION OF UNIONS AND COMMUNITY GROUPS | Other / Unclassified | — | $15,000 |
| Recent | 2024-02-02 | SIMON, LATEEFAH | Strategy & Research | POLLING | $16,750 |
| Recent | 2025-11-25 | BARRERA FOR SUPERINTENDENT OF PUBLIC INSTRUCTION 2026 | Other / Unclassified | — | $2,900 |
| Recent | 2025-10-22 | ALLEN FOR INSURANCE COMMISSIONER 2026; BEN | — | — | $2,400 |