In the 2026 California 4th District primary, 7 outside groups spent $5.9M: $1.9M supporting Mike Thompson (D), $1.5M opposing Mike Thompson, $1.3M supporting Eric Jones (D) and $1.3M opposing Eric Jones.
outside money
- supporting Mike Thompson (D)
- $1.9M
- opposing Mike Thompson (D)
- $1.5M
- supporting Eric Jones (D)
- $1.3M
- opposing Eric Jones (D)
- $1.3M
Outside money supporting and opposing each candidate
Both sides on one scaleMike Thompson Democrat
$1.5M$1.9M$1.9M supporting Mike Thompson · $1.5M opposing Mike Thompson
Eric Jones Democrat
$1.3M$1.3M$1.3M supporting Eric Jones · $1.3M opposing Eric Jones
Ray Riehle Republican
$62,177$62,177 opposing Ray Riehle
This seat, every election
California 4th District
$7.4M
outside money in the 2026 cycle
- California 4th District general 2026$1.4Moutside money
- California 4th District primary 2026$5.9Moutside money
The candidates
What each candidate’s own campaign raised, beside what outside groups spent supporting and opposing them.
Mike Thompson
Democrat
- Own campaign raised
- $4.2M
- Outside money supporting
- $1.9M
- Outside money opposing
- $1.5M
Eric Jones
Democrat
- Own campaign raised
- $8.4M
- Outside money supporting
- $1.3M
- Outside money opposing
- $1.3M
Ray Riehle
Republican
- Own campaign raised
- $115K
- Outside money opposing
- $62,177
John MacKenzie
Republican
- Own campaign raised
- $14,129
- Campaign money to 30 Jun 2026
Week by week
Outside money each week, supporting and opposing the candidates, all candidates combined.
Week of 1 Jun 2026
Opposing $8,643
The groups on each side
The biggest outside groups in this race, by what they spent supporting or opposing each candidate.
Spent supporting a candidate
- BDA PACsupporting Mike Thompson$1.3M
- New Leadership Nowsupporting Eric Jones$1.3M
- Article One PACsupporting Mike Thompson$499K
- National Association of Realtors Political Action Committeesupporting Mike Thompson$51,293
- We Vote - Nosotros Votamos - PPAMM Committeesupporting Mike Thompson$13
- Sierra Club Independent Actionsupporting Mike Thompson$10
Spent opposing a candidate
- New Leadership Nowopposing Mike Thompson$1.5M
- BDA PACopposing Eric Jones$1.3M
- California Leadership Fundopposing Ray Riehle$62,177
Who’s connected to whom
The groups that spent supporting or opposing the candidates.
- New Leadership Now spent opposing Mike Thompson · $1.5M
- BDA PAC spent supporting Mike Thompson · $1.3M
- BDA PAC spent opposing Eric Jones · $1.3M
- New Leadership Now spent supporting Eric Jones · $1.3M
- Article One PAC spent supporting Mike Thompson · $499K
- California Leadership Fund spent opposing Ray Riehle · $62,177
- National Association of Realtors Political Action Committee spent supporting Mike Thompson · $51,293
- We Vote - Nosotros Votamos - PPAMM Committee spent supporting Mike Thompson · $13
- Sierra Club Independent Action spent supporting Mike Thompson · $10
- Gillespie Family Trust gave to New Leadership Now · $225K
- Robertson 2012 Trust gave to New Leadership Now · $72,000
- Opportunity Forward Alliance (DC) gave to BDA PAC · $1.4M
- Bench gave to BDA PAC · $1.0M
- Article One Action Fund (DC) gave to Article One PAC · $2.6M
- Opportunity Forward Alliance (DC) gave to Article One PAC · $750K
- Hebert Family Trust gave to California Leadership Fund · $10,000
- Planned Parenthood Advocates Mar Monte gave to We Vote - Nosotros Votamos - PPAMM Committee · $5,146
- Alma Soul gave to We Vote - Nosotros Votamos - PPAMM Committee · $500
Group
- New Leadership Now spent $1.5M opposing Mike Thompson$1.5M
- New Leadership Now spent $1.3M supporting Eric Jones$1.3M
- Gillespie Family Trust gave $225K to New Leadership Now$225K
- Robertson 2012 Trust gave $72,000 to New Leadership Now$72,000
Go deeper
The paperwork behind this race, all of it. Free with an email sign-in.
The paperwork