$8.5M
600 contributions within 30 days of 126 votes
William Morgan Cassidy is an American politician and physician who is the senior United States senator from Louisiana, a seat he has held since 2015. A member of the Republican Party, he served in the Louisiana State Senate from 2006 to 2009 and in the U.S.
Raised
$0
Spent
$0
Outside spending
$0
132 votes · cycle 2026 · Mar 30, 2026
Some data sources have not been ingested for this politician.
Funding Transparency
Significant concern$1,112,710 (78%) of outside spending comes from entities matching dark money naming patterns, led by CLEARPATH ACTION FUND, INC..
Vote Independence
Moderate concernVotes with Republicans 90% of the time — 29 breaks from the majority across 298 roll calls.
Timing Patterns
Significant concern$854,117 in contributions landed within 30 days of 126 congressional votes.
Lobby Influence
Moderate concernFinance & Banking, Healthcare, Education appear in both lobbying filings and campaign contributions — $225,581 in overlapping funding across 148 lobbying filings.
Peer Standing
No flags$8.5M
600 contributions within 30 days of 126 votes
Outside spending
medium14 filings — 7 support, 7 oppose
$1,430,834 in outside spending on record.
Contribution outlier
VIDRINE, JESSE at $18K vs peer average $8K
Compares the top donor's contribution to the average across similar politicians.
Party alignment
How often this politician sides with their party on roll calls where the party mostly agreed.
Legislative focus
Funding sources
Lobbying activity
593clients
593 bill references on record · 593 linked to specific bills
American Superconductor
Filed by Old North Strategies, LLC
American Superconductor
Filed by Ultra Maritime Llc (Formerly Reported As Ultra Electronics Defense Inc)
American Superconductor
Filed by Experimental Aircraft Association, Inc.
American Superconductor
Filed by Windward Strategies
American Superconductor
Filed by Mg Housing Strategies LLC
American Superconductor
Filed by Longbow Public Policy Group, Llc
American Superconductor
Filed by Lemunyon Group, LLC
American Superconductor
Filed by Sbl Strategies, Llc
American Superconductor
Filed by Pike Associates Llc
American Superconductor
Filed by Florida Sugar Cane League
Source: federal lobbying disclosures and congressional vote records.
56 bills voted on · 11 lobbied
Voted on by
Adam B. Schiff
Alex Padilla
Amy Klobuchar
Andy Kim
+96 more
Lobbied by
American Superconductor
Coalition For Responsible Waste Incineration
Electra Aero, Inc.
General Atomics Electromagnetic Systems, Inc.
+7 more
Voted on by
Aaron Bean
Abraham J. Hamadeh
Adam B. Schiff
Adam Gray
+534 more
Lobbied by
Commercial Vehicle Safety Alliance
Exelixis, Inc.
National Association Of Small Trucking Companies
Rtx Corporation And Affiliates (Fkaraytheon Technologies Corporation)
+1 more
Voted on by
Aaron Bean
Abraham J. Hamadeh
Adam B. Schiff
Adam Gray
+528 more
Lobbied by
Bb Living
City Of Santa Clara
Dignitymoves
Voted on by
Adam B. Schiff
Alex Padilla
Amy Klobuchar
Andy Kim
+96 more
Lobbied by
Greater New York Hospital Association
Voted on by
Adam B. Schiff
Alex Padilla
Amy Klobuchar
Andy Kim
+96 more
Lobbied by
Coalition For Responsible Waste Incineration
Voted on by
Adam B. Schiff
Alex Padilla
Amy Klobuchar
Andy Kim
+96 more
Lobbied by
Coalition For Responsible Waste Incineration
Voted on by
Aaron Bean
Abraham J. Hamadeh
Adam B. Schiff
Adam Gray
+527 more
Lobbied by
City Of Santa Clara
Voted on by
Aaron Bean
Abraham J. Hamadeh
Adam B. Schiff
Adam Gray
+528 more
Lobbied by
Coalition For Responsible Waste Incineration
Voted on by
Adam B. Schiff
Alex Padilla
Amy Klobuchar
Andy Kim
+96 more
Lobbied by
Coalition For Responsible Waste Incineration
Voted on by
Aaron Bean
Abraham J. Hamadeh
Adam B. Schiff
Adam Gray
+529 more
Lobbied by
Presler Persistence Llc
Top industries
Sources and notes
Campaign finance data comes from FEC.gov filings, while available vote records come from Congress.gov and the U.S. Senate roll call feed. Figures stay as reported by those sources. House votes come from Congress.gov. Senate votes come from the official roll call feed. Coverage may be incomplete for some profiles. Recent profile snapshots are reused briefly so repeat views stay fast and consistent.