👤 About Mark Spencer
Mark Spencer is a Republican candidate for U.S. Senate in Louisiana’s 2026 federal election cycle. The campaign committee, MARK SPENCER FOR LOUISIANA, is registered in BELLE CHASSE, LA, with SPENCER, MARK listed as treasurer. The campaign has not yet reported substantial fundraising in current FEC filings. The race’s incumbent is Republican William Cassidy.
Bio auto-generated from candidate filings.
🔗 Where to learn more
💰 Campaign finance
No FEC filings reported yet for the 2026 cycle.
🏁 The race for U.S. Senate
MS
Mark Spencer VIEWING
Republican
21 candidates have filed with the FEC for this race.
NONPARTISAN · SOURCED FROM CONGRESS.GOV, OPENFEC, SENATE & HOUSE CLERKS · UPDATED REGULARLY
2026 candidate profile
Mark Spencer
Republican · Challenger
Running for: Louisiana U.S. Senate
FEC pending
Total raised
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Cash on hand
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Spent
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FEC status
FEC filing
FEC IDS6LA00698
OfficeLouisiana U.S. Senate
PartyRepublican
See the full race
View every candidate, all fundraising totals, and the primary results for the Louisiana U.S. Senate race.
🗳 2026 Election
U.S. Senate — Louisiana
Primary: May 16, 2026 (7 weeks ago)
· General: November 3, 2026
House primaries postponed pending redistricting (Louisiana v. Callais).