John Cornyn
Republican
· TX Senate · 119th Congress
and Global Competitiveness (Chair) · and Border Safety (Chair) · United States Senate Caucus on International Narcotics Control (Chair) · Joint Committee on Taxation · Senate Committee on Finance · Natural Resources · and Infrastructure · Senate Committee on Foreign Relations · the Pacific · and International Cybersecurity Policy · Transnational Crime · Civilian Security · Human Rights · and Global Women's Issues · Senate Committee on the Budget · Senate Committee on the Judiciary · and the Law · Senate Select Committee on Intelligence
Influence Score
94.6
Most exposed
↑ +19.8
vs 118th (74.8)
— ◊ —
This score measures financial influence across twelve categories. Each bar shows how this member compares to all others in Congress. Longer bars mean more exposure.
Score breakdown — twelve categories
Contributionsmoney from PACs (political action committees) and individual donors
7.7
/ 12
Outside spendingmoney spent by groups to help elect them
6.0
/ 6
Spent to help elect them
$12,499,524
Outside groups that spent to help elect this member — this drives the outside-spending bar above
Spent to defeat this member
$5,519,323
Outside groups that spent to defeat this member (not counted in this score)
Lobbyinghow hard lobbyists push the committees this member sits on
10.0
/ 10
Vote alignmenthow often they vote the way their donors want
2.2
/ 12
Contribution timingmoney arriving near key votes
3.9
/ 6
Stock tradesbuying stocks in industries they regulate
0.0
/ 1
Dark moneyfunding from groups that hide their donors
< 0.1
/ 2
Outbound money distributionmoney this member sends out to the party and to colleagues
13.4
/ 16
Cluster network breadthhow many coordinated funding networks back this member
8.0
/ 10
Committee jurisdiction powerthe legislative reach of the committees this member sits on
10.0
/ 10
Foreign interestforeign-interest money — Israel-policy PACs and FARA-registered institutional lobbying allocated by committee jurisdiction
11.5
/ 12
Israel-policy PACs behind this score
AMERICAN ISRAEL PUBLIC AFFAIRS COMMITTEE POLITICAL ACTION COMMITTEE
$6,994 direct
FARA institutional lobbying
This member’s committees are targeted by $223.77M in lobbying from FARA-registered firms representing South Korea, Japan, Saudi Arabia. This exposure is weighted at 0.2% of face value in the score — $448K.
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Score across four congresses
Score and tier for each Congress. Members are ranked against others in the same Congress, so tiers are comparable across rows. Raw scores reflect different data availability per Congress.
| Congress | Score | Tier |
|---|---|---|
| 116th · 2019-2021 | 83.2 | Most exposed |
| 117th · 2021-2023 | 99.0 | Most exposed |
| 118th · 2023-2025 | 74.8 | Highly exposed |
| 119th · 2025-2027 | 94.6 | Most exposed |
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Biggest funding source
The single network behind the most money and influence
Network
CFF
Total money from this network
$30,402,482
Number of funding networks contributing
1
— ◊ —
Where most of the money comes from
What share of their combined contributions and outside spending comes from a single network. Party committees are excluded.
Network
CFF
Share from this one network
66.6%
Amount from this network
$10,261,751
Total from all networks
$15,403,551
Networks contributing
544
— ◊ —
Who funds Cornyn
Every funding network we can measure, ranked by influence
$13,844,324
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Does the money match their power?
Whether their money comes from the industries their committees actually oversee
Money from industries they regulate
95.8%
Extra weight when money matches their committees
2.00×
Share of outside spending tied to their policy areas
1.4%
— ◊ —
Money timed to key votes
Donations arriving near key votes in the policy areas this member regulates
Times money arrived near a vote
39
Money that arrived near votes
$124K
Distinct donors
63
Distinct employers
26
Share of their total fundraising
3.20%
Biggest clusters of timed money
WINKLEVOSS CAPITAL MANAGEMENT
$13K
HMG HEALTHCARE
$10K
ANDREESSEN HOROWITZ
$7K
ANDREESSEN HOROWITZ
$7K
J W CHILDS ASSOCIATES
$7K
MAIN PLAZA INVESTMENT
$7K
CREATIVE SOLUTIONS IN HEALTHCARE
$5K
IMPALA ASSET MANAGEMENT
$4K
ENERGY TRANSFER
$4K
KINGDON CAPITAL MANAGEMENT
$4K
— ◊ —
Top Donors
Biggest sources of contributions, grouped by employer, this cycle
HOMEMAKER
$434K
HOMEMAKER
$221K
TRAMMELL CROW
$175K
HOMEMAKER
$165K
WEEKLEY PROPERTIES
$107K
WEEKLEY PROPERTIES
$73K
SAULSBURY INDUSTRIES
$72K
CEO
$68K
C E O
$61K
ENTREPRENEUR
$56K
CROWN QUEST OPERATING
$55K
OWNER
$54K
SAULSBURY
$50K
STEDMAN WEST INTERESTS
$50K
GALLERY FURNITURE
$50K
PEROT SYSTEMS
$49K
AT T
$49K
CHARTER BROKERAGE
$41K
EXECUTIVE
$41K
WINKLEVOSS CAPITAL
$40K
Where the outside money comes from
How much of the outside spending for and against John Cornyn comes from groups that disclose their donors versus groups that hide them
Total outside spending received
$5.39M
Disclosed outside spending
$5.39M
Dark-money outside spending
$8
Share that is dark money
0.00%
Dark money tied to their policy areas
$0
Groups hiding their donors
1
By funding network
SMP
$17.23M
FF PAC
$13.36M
CFF
$10.25M
AMERICANS FOR PROSPERITY ACTION, INC. (AFP ACTION) DBA CVA ACTION AND DBA LIBRE ACTION
$9.38M
LONE STAR LIBERTY PAC
$4.02M
WOMEN VOTE
$2.01M
DUTY TO AMERICA PAC
$1.40M
SLF PAC
$1.31M
NATIONAL ASSOCIATION OF REALTORS CONGRESSIONAL FUND
$915K
ASSOCIATION OF TEXAS CONSERVATIVES
$275K
REPUBLICAN LEADERSHIP FUND INC.
$234K
OPPORTUNITY MATTERS FUND, INC.
$200K
WOMEN SPEAK OUT PAC
$129K
CONSERVATIVE TEXANS PAC
$91K
INDIVISIBLE ACTION ARIZONA
$77K
Groups that hide their donors
1 smaller group under $500
$8
Likely donors behind the dark money supporting this member
Inferred
Donors who fund the disclosed PACs in the same network as the hidden groups above. "Coverage" is how many of that network's disclosed groups a donor funds — the more they fund, the more likely they also back the hidden group.
NEVADANS FOR STEVEN HORSFORD
$80K
TITUS FOR CONGRESS
$80K
SUSIE LEE FOR CONGRESS
$79K
GEORGE SOROS
$525.74M
SMP
$81.00M
BLACKPAC
$47.25M
AB PAC
$25.50M
HMP
$15.00M
HOUSE MAJORITY PAC
$15.00M
CARE IN ACTION PAC
$6.60M
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Pro-Israel network donors
This counts contributions to this member from individuals whose FEC filings also show contributions to one of the 16 pro-Israel political action committees tracked by the Index. It is a measure of donor overlap — not a claim about why any individual gave, and not part of the influence score.
96 individuals who also gave to pro-Israel PACs contributed $3.84M to John Cornyn across 171 contributions.
Total from shared contributors
$3.84M
Shared contributors
96
Contributions
171
By cycle
| Cycle | Shared donors | Gifts | Total |
|---|---|---|---|
| 2022 | 11 | 29 | $630K |
| 2024 | 7 | 24 | $1.10M |
| 2026 | 81 | 118 | $2.11M |
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Revolving Door
20 former staff members
who worked for John Cornyn or the committees they serve are now registered lobbyists.
| Lobbyist | Former position | Firm | Clients | Filings | Years |
|---|---|---|---|---|---|
| MATTHEW JOHNSON | Chief Counsel, Sen. John Cornyn; Senate Judiciary Committee | KLEIN/JOHNSON GROUP | 48 | 263 | 2023–2025 |
| ARTHUR SCOTT | Staff Assistant, Senator Cornyn; Intern Senator Cornyn; Intern, Senator Wicker | AXADVOCACY GOVERNMENT RELATIONS | 31 | 85 | 2023–2025 |
| MADISON SMITH | Majority Staff Director, Senate Finance Subcommittee on International Trade, Cus… | COZEN O'CONNOR PUBLIC STRATEGIES | 29 | 105 | 2023–2025 |
| JERR ROSENBAUM | Legislative Director, Sen. John Cornyn; Chief of Staff, Rep. Robert Hurt; Chief … | PENN AVENUE PARTNERS | 28 | 273 | 2023–2025 |
| BRYCE MATTHEWS | Intern, Congressman Mike Conway; Intern, Senator John Cornyn; Staff Assistant, C… | COZEN O'CONNOR PUBLIC STRATEGIES | 20 | 72 | 2024–2025 |
| RUSSELL THOMASSON | Chief of Staff, Legislative Dir and Legislative Asst to Senator John Cornyn; Leg… | CASSIDY & ASSOCIATES, INC. | 15 | 17 | 2023–2025 |
| MADISON SMITH | Majority Staff Dir, Senate Finance Subcommittee on International Trade, Customs,… | RIDGE PATH STRATEGIES | 14 | 33 | 2025–2025 |
| SAPNA RAMPERSAUD | Law Clerk, Senator Cornyn and Senate Judiciary Committee; Law Clerk, House Educa… | BROWNSTEIN HYATT FARBER SCHRECK, LLP | 13 | 13 | 2025–2025 |
| HOLTEN STRINGER | Legislative Correspondent/Staff Assistant, Senator John Cornyn | VAN SCOYOC ASSOCIATES | 11 | 11 | 2023–2025 |
| ANDREW SIRACUSE | Sr. Tax Cnsl., Sen. John Cornyn; Staff Dir., Sen. Fin. Cmte. Int'l. Trade, Custo… | HOLLAND & KNIGHT LLP | 11 | 11 | 2025–2025 |
| MATTHEW CONNER | District Director for Congressman Michael McCaul and Deputy Regional Director fo… | ARETE PUBLIC AFFAIRS | 2 | 2 | 2025–2025 |
| JERR ROSENBAUM | Legislative Director, Senator John Cornyn; Chief of Staff, Rep. Robert Hurt; Chi… | HR STRATEGIES LLC | 1 | 12 | 2023–2025 |
| ANDREA MCGEE | Administrative Director, Senator John Cornyn | NFIB (NATIONAL FEDERATION OF INDEPENDENT BUSINESS) | 1 | 1 | 2023–2023 |
| ANDREW COOPER | Staff Assistant/Legislative Correspondent, Rep. Zach Wamp, 3/2010-1/2011; Sr. Pr… | INFINERA CORPORATION | 1 | 1 | 2023–2023 |
| ELIZABETH JAFARI | Chief of Staff Senator John Cornyn | KELLEY DRYE & WARREN LLP | 1 | 2 | 2023–2023 |
| JAMES BARIL | Regional Deputy Director, Office of Senator John Cornyn 2003-2005 | VOX GLOBAL | 1 | 1 | 2024–2024 |
| PAMELA FIERST-WALSH | Francis Brookes - Treasury Office of Int. Trade + Development Office of Congress… | DE BEERS PLC | 1 | 1 | 2025–2025 |
| TAYLOR ARMENTROUT | Staff Assistant, Legislative Correspondent, Legislative Aide - Senator John Corn… | AXIOM SPACE, INC. | 1 | 2 | 2025–2025 |
| ANDREW COOPER | Leg. Corresp., Rep. Wamp (2010-11); Sr. Professional Staff Member, House Appropr… | NOKIA OF AMERICA CORPORATION | 1 | 1 | 2025–2025 |
| ANDREA MCGEE | Administrative Director, Senator John Cornyn | DELL TECHNOLOGIES INC. | 1 | 1 | 2025–2025 |
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John Cornyn ranks among the most exposed members of this Congress — the top tier on the index. The markers run across several of the twelve categories for the same funding network: contributions, outside spending, lobbying inside the policy areas this member regulates, vote alignment, and contribution timing among them. The score measures financial exposure in the public record; it is not a finding of intent or wrongdoing.
Data: FEC (Federal Election Commission) filings · 118th–119th Congress · lobbying disclosures · VoteView recorded votes
All findings derived programmatically from public records · No prior knowledge required
All findings derived programmatically from public records · No prior knowledge required