Head-to-head

CASSIDY, WILLIAM M. vs SPENCER, MARK

Same race2-way comparison

Side-by-side party, office, state, district, and FEC totals from the FEC. Read our methodology for how we collect and verify this data.

Candidate A

CASSIDY, WILLIAM M.

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Republican candidate for U.S. Senate — LA

Totals as of April 26, 2026.

Candidate B

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Republican candidate for U.S. Senate — LA

Totals as of April 26, 2026.

Attribute	Candidate ACASSIDY, WILLIAM M.SwapRemoveRepublican · U.S. SenateLAIncumbentSource: FEC	Candidate BSPENCER, MARKSwapRemoveRepublican · U.S. SenateLASource: FEC
Sourced facts
Legal name	CASSIDY, WILLIAM M.	SPENCER, MARK
Party	Republican	Republican
Office sought	U.S. Senate	U.S. Senate
State	Louisiana	Louisiana
District	—	—
Incumbency	Incumbent	Challenger / Open seat
FEC candidate ID	S4LA00107	S6LA00698
Campaign financials (2026)
Total receipts	$6,727,956	$5,421
Total disbursements	$7,791,706	$5,278
Cash on hand	$5,516,669	$143
Debts owed	$0	$5,275
Individual contributions	$2,426,053	$26
PAC contributions	$1,652,410	$0
Party transfers	$62,000	$0
Self-financing	$0	$120
Last filing	April 26, 2026	April 26, 2026
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