The filing deadline for the Maine Republican presidential primary passed on Dec. 1, 2023. Six candidates qualified to appear on the March 5, 2024, ballot. In order to qualify, candidates had to submit a petition with 2,000 signatures.
The following candidates qualified:
- Ryan Binkley
- North Dakota Governor Doug Burgum
- Florida Governor Ron DeSantis
- Former U.N. Ambassador and South Carolina Governor Nikki Haley
- Vivek Ramaswamy
- Former President Donald Trump