PaidForPolitics

California’s 4th District

Through Oct. 30, 2026, outside groups have reported $12,537,297 in independent spending in this race: $6,593,505 for the general election and $5,943,791 in the primaries. The biggest spender in the general election so far is New Leadership Now, at $2.7M.

On the November ballot: Mike Thompson (D) and Eric Jones (D).

  • General election
    $6.6M
  • Primaries
    $5.9M
  • Late reports
    $6.6M
  • Last 14 days
    $1.8M

New since the Oct. 31 update

No new outside spending reported.

Results · live from 6 p.m. ET on Nov. 3

On the ballot: Mike Thompson (D), Eric Jones (D). Vote counts and the call will show here on election night, updated every minute.

Results and race calls from civicAPI, from state election offices. Outside money from FEC filings.

Money on each side · CA-04 general election

Mike Thompson (D)

$3.9M 59%

$1.9M supporting Mike Thompson and $1.9M attacking Eric Jones

Eric Jones (D)

$2.7M 41%

$2.7M attacking Mike Thompson

A candidate’s total adds money spent supporting them to money spent attacking their opponent.

FEC filings through Oct. 30, 2026 · paidforpolitics.com

3 days until Election Day, Tuesday, Nov. 3.

Voting in California? Check your registration, deadlines and options on vote.gov

On the November ballot · campaign money and outside spending around each

  • Outside spending for
  • Outside spending against

November ballot as listed by this source on Oct. 14, 2026. Party letters: D Democrat, R Republican, I independent, L Libertarian, G Green.

Not on the November ballot · lost a primary, withdrew or didn’t run, with the money spent around them

Primary scorecard: which groups’ money backed the nominees

Others who filed with the FEC: Laurie John Mackenzie (R), raised $14,229; Sharon Brown (R), raised $7,000; Mandy Ghusar (R), raised $7,000; Trevor Merrell (D), raised $6,435.

Every outside spender · 10 groups, general-election money first

SpenderSpent onGeneralPrimaryTotalLatest
New Leadership NowSuper PAC · $2.7M in late reportsAGAINST Mike Thompson (D)FOR Eric Jones (D)FOR Mike Thompson (D)$2.7M$2.7M$5.4MOct. 30, 2026
Bda PACHybrid PAC · $1.7M in late reportsAGAINST Eric Jones (D)FOR Mike Thompson (D)$1.7M$2.6M$4.3MOct. 20, 2026
Article One PACHybrid PAC · $997K in late reportsFOR Mike Thompson (D)AGAINST Eric Jones (D)$997K$499K$1.5MOct. 26, 2026
Center Forward CommitteeSuper PAC · $750K in late reportsFOR Mike Thompson (D)$750K–$750KOct. 8, 2026
American Hospital Association PACPAC · $275K in late reportsHealth care costsFOR Mike Thompson (D)$275K–$275KOct. 2, 2026
National Association of Realtors Political Action CommitteePAC · $64K in late reportsHousingFOR Mike Thompson (D)$64K$51K$115KSept. 29, 2026
Public Integrity AllianceSuper PAC · $40K in late reportsFOR Mike Thompson (D)$40K–$40KOct. 23, 2026
California Leadership FundSuper PAC · $33K in late reportsAGAINST Raymond Riehle (R)AGAINST Mike Thompson (D)$33K$62K$96KOct. 8, 2026
Inclusion PACSuper PAC · $25K in late reportsFOR Mike Thompson (D)$25K–$25KOct. 25, 2026
Sierra Club Independent ActionSuper PACEnergy & climateFOR Mike Thompson (D)–$10$10Oct. 20, 2025

Latest filings · newest 30

Follow new filings in this race by RSS, updated each night.

DateSpenderFor or againstElectionAmount
Oct. 30, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$140,000
Oct. 30, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$100,000
Oct. 29, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$100,000
Oct. 28, 2026LateNew Leadership NowDigital ad productionAGAINST Mike Thompson (D)General$9,450
Oct. 28, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$4,775
Oct. 28, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$4,775
Oct. 28, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$2,780
Oct. 27, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$100,000
Oct. 26, 2026LateArticle One PACDigital media buy & production - estimateAGAINST Eric Jones (D)General$195,000
Oct. 26, 2026LateArticle One PACMedia production - estimateAGAINST Eric Jones (D)General$8,000
Oct. 25, 2026LateInclusion PACDigital adsFOR Mike Thompson (D)General$25,256
Oct. 23, 2026LatePublic Integrity AllianceDigital advertising (estimate)FOR Mike Thompson (D)General$40,000
Oct. 23, 2026LateNew Leadership NowDirect mail adsAGAINST Mike Thompson (D)General$29,658
Oct. 23, 2026LateNew Leadership NowDirect mail adsAGAINST Mike Thompson (D)General$29,658
Oct. 22, 2026LateNew Leadership NowDirect mail adsAGAINST Mike Thompson (D)General$52,130
Oct. 22, 2026LateNew Leadership NowDirect mail adsAGAINST Mike Thompson (D)General$52,130
Oct. 22, 2026LateArticle One PACDirect mail - estimateFOR Mike Thompson (D)General$49,527
Oct. 22, 2026LateNew Leadership NowDirect mail adsAGAINST Mike Thompson (D)General$42,026
Oct. 21, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$125,000
Oct. 21, 2026LateNew Leadership NowDirect mail adsAGAINST Mike Thompson (D)General$52,130
Oct. 21, 2026LateArticle One PACDirect mail - estimateFOR Mike Thompson (D)General$49,527
Oct. 20, 2026LateBda PACMedia advertisingAGAINST Eric Jones (D)General$200,000
Oct. 20, 2026LateArticle One PACDigital & media production - estimateFOR Mike Thompson (D)General$195,000
Oct. 20, 2026LateBda PACMedia advertisingAGAINST Eric Jones (D)General$175,000
Oct. 16, 2026LateArticle One PACDirect mail - estimateFOR Mike Thompson (D)General$49,527
Oct. 15, 2026LateBda PACMedia advertisingAGAINST Eric Jones (D)General$400,000
Oct. 15, 2026LateArticle One PACDirect mail - estimateFOR Mike Thompson (D)General$51,648
Oct. 14, 2026LateNew Leadership NowAdvertising productionAGAINST Mike Thompson (D)General$9,850
Oct. 11, 2026LateNew Leadership NowDigital adsAGAINST Mike Thompson (D)General$266,634
Oct. 11, 2026LateNew Leadership NowTelevision adsAGAINST Mike Thompson (D)General$183,367

About these numbers

  • Outside spending is money groups spent on their own ads, mail and canvassing for or against a candidate. Groups can’t coordinate it with campaigns, and it isn’t counted in what campaigns raised or spent.
  • Every group that reported independent spending to the FEC is listed, not only the groups on our issue pages. Groups tracked on an issue page carry a tag linking to it.
  • Primary, special or general comes from the election the group listed on each expenditure. Seats with a special election this cycle show that money separately. The primary scorecard shows how each group’s primary money did.
  • Late reports are 24- and 48-hour filings made since a group’s last regular report. Earlier ones are already counted on that report, so we don’t count them twice.
  • Some nonprofits don’t have to name their donors, so this shows who spent the money, not always who gave it.

FEC data as of Oct. 30, 2026. Campaign figures cover the full 2026 cycle. Current member: Rep. Mike Thompson. How this works.