Campaign finance data from FEC filings.
Detailed fundraising analytics available in Legis1
2026 Cycle
1,027 contributions· WESTERMAN FOR CONGRESSIndividuals 27%PACs 48%
2024 Cycle
1,527 contributions· WESTERMAN FOR CONGRESSIndividuals 36%PACs 64%
2022 Cycle
1,830 contributions· WESTERMAN FOR CONGRESSIndividuals 41%PACs 59%
2020 Cycle
1,097 contributions· WESTERMAN FOR CONGRESSIndividuals 42%PACs 58%
Top PAC Donors
PASCUA YAQUI TRIBE
3 contributions
$14K
AMEREN CORPORATION FEDERAL POLITICAL ACTION COMMITTEE (AMEREN FEDPAC)
2 contributions
$10K
AMERICAN ISRAEL PUBLIC AFFAIRS COMMITTEE POLITICAL ACTION COMMITTEE
2 contributions
$10K
AMERICAN SPORTFISHING ASSOCIATION POLITICAL ACTION COMMITTEE
2 contributions
$10K
CATERPILLAR INC. POLITICAL ACTION COMMITTEE (CATPAC)
2 contributions
$10K
CHEVRON EMPLOYEES POLITICAL ACTION COMMITTEE - CHEVRON CORPORATION
2 contributions
$10K
CHUGACH ALASKA CORPORATION PAC (CAC PAC)
2 contributions
$10K
EDISON INTERNATIONAL PAC
5 contributions
$10K
FIRSTENERGY CORP POLITICAL ACTION COMMITTEE
2 contributions
$10K
GULF STATES TOYOTA INC FEDERAL POLITICAL ACTION COMMITTEE
2 contributions
$10K
Top Donor Employers
ARNOLD VENTURES
5 contributions
$20K
BLOOMBERG INC
3 contributions
$14K
SIERRA PACIFIC IND.
5 contributions
$14K
BLACKSTONE
3 contributions
$12K
CLEARPATH FOUNDATION
3 contributions
$12K
STEPHENS, INC.
3 contributions
$12K
THE WINROCK GROUP
3 contributions
$11K
ARVEST BANK
2 contributions
$9K
CAPCVENTURES LLC
2 contributions
$9K
CORCORAN PARTNERS
2 contributions
$9K
Source: FEC itemized contribution filings
Candidate-provided Public data (FEC) AllCiv / Legis1 coverage