The 2024 Maine Republican presidential primary was held on March 5, 2024, as part of the Republican Party primaries for the 2024 presidential election. 20 delegates to the 2024 Republican National Convention were allocated on a winner-take-most basis.[1] The contest was held on Super Tuesday alongside primaries in 14 other states. This was a semi-closed primary where party members may only vote in their respective party's primary, but unenrolled voters may choose a party's primary to participate in. This change in law from Maine's previous closed primary went into effect on May 14, 2022, without Gov. Janet Mills' signature.[2]