Mark Spencer is a Republican from Belle Chasse, Louisiana. He qualified for the Republican primary on February 13, 2026. Very limited biographical information is publicly available. He is one of four Republicans in the primary alongside incumbent Bill Cassidy, Julia Letlow, and John Fleming.
Mark Spencer is from Belle Chasse in Louisiana and qualified for the 2026 Republican Senate primary on February 13, 2026. He declined to speak with media at the time of qualifying.
No federal voting record.
Minimal public campaign profile; declined media interviews.