Full profile
Louisiana’s 2026 U.S. Senate general election is scheduled for Nov. 3, 2026. Mark Spencer is running as a Republican in a contested race that includes 21 candidates, including Republican incumbent William M. Cassidy.
Mark Spencer’s official entry
Spencer’s entry identifies him as a Republican candidate for U.S. Senate. It lists no biographical information, so it does not identify his occupation, education, prior public service or other personal background.
No documented policy positions are listed for Spencer. His entry also contains no figures for money raised, money spent or cash on hand. An unlisted campaign finance figure should not be read as zero; it means no amount is recorded in the entry.
Candidates in the race
Each candidate’s entry contains the same basic gaps: no biography, documented policy positions, fundraising total, spending total or cash-on-hand figure is listed.
- Randall Steven Phd Arrington — Republican. No biography, policy position or campaign finance figure is listed.
- Christopher Lee Mr. Holder — Republican. No biography, policy position or campaign finance figure is listed.
- Xan Mr. John — Republican. No biography, policy position or campaign finance figure is listed.
- Tracie Burke — Democrat. No biography, policy position or campaign finance figure is listed.
- Jamie Labranche — W. No biography, policy position or campaign finance figure is listed.
- Samuel Lee Mr. Wyatt — Republican. No biography, policy position or campaign finance figure is listed.
- William M. Cassidy — Republican, incumbent. No biography, policy position or campaign finance figure is listed.
- Julia Letlow — Republican. No biography, policy position or campaign finance figure is listed.
- Markeda Ann Cottonham — Republican. No biography, policy position or campaign finance figure is listed.
- Blake Miguez — Republican. No biography, policy position or campaign finance figure is listed.
- Jamie Davis — Democrat. No biography, policy position or campaign finance figure is listed.
- Kathy W Seiden — Republican. No biography, policy position or campaign finance figure is listed.
- Tracy Collene Dendy — Republican. No biography, policy position or campaign finance figure is listed.
- Eric Skrmetta — Republican. No biography, policy position or campaign finance figure is listed.
- Julie Cathryn Emerson — Republican. No biography, policy position or campaign finance figure is listed.
- Mark Spencer — Republican. No biography, policy position or campaign finance figure is listed.
- Nicholas S. Albares — Democrat. No biography, policy position or campaign finance figure is listed.
- John C. Jr. Fleming — Republican. No biography, policy position or campaign finance figure is listed.
- Jabarie Walker — Democrat. No biography, policy position or campaign finance figure is listed.
- Gary Crockett — Democrat. No biography, policy position or campaign finance figure is listed.
- Joshua Morott — Republican. No biography, policy position or campaign finance figure is listed.
What the entries establish
The candidate list identifies 15 Republicans, five Democrats and one candidate whose party label is listed as “W.” Cassidy is the only candidate identified as the incumbent. The race is for Louisiana’s seat in the U.S. Senate, and all listed candidates are part of the same Nov. 3 general election contest.
The entries do not establish where any candidate stands on public policy. They also do not offer campaign finance amounts that would allow voters to compare fundraising, spending or cash reserves across the field.
What comes next
Before voting, voters can watch for updates to the official candidate list, documented policy positions and campaign finance entries. Those records would add details about the candidates’ priorities and campaign activity without changing the scheduled general election date of Nov. 3, 2026.
