2024 Maine Democratic presidential primary

The 2024 Maine Democratic presidential primary took place on March 5, 2024, as part of the Democratic Party primaries for the 2024 presidential election. 32 delegates to the Democratic National Convention were allocated to presidential candidates. The contest was held on Super Tuesday alongside primaries in 14 other states and territories. 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.

Biden won in a landslide, with some opposition from Philips, who won almost 7% of the vote.

Candidates
The filing deadline was December 1. Two candidates met the requirements to appear on the ballot:


 * Joe Biden
 * Dean Phillips

Write-in campaign
The Maine Coalition for Palestine launched an effort to convince voters to write-in "Ceasefire" in the primary, drawing inspiration from a similar campaign in New Hampshire and the success of the campaign for uncommitted votes in Michigan. However, as Maine state law only requires that votes for declared write-in candidates be tallied, these votes will be counted as blank ballots.

Results by county
Biden won every county by a comfortable margin. He performed best in Lincoln County, reaching slightly less than 90% of the vote. Conversely, he recorded his worst result in the Arostook County, where both Phillips and blank ballots reached their best performance. Phillips secured the second place in Franklin, Kennebec and Oxford counties, while falling to the third in the other thirteen.

Results by congressional district
Biden won both districts by more than 80% of the vote. Both he and blank votes performed better in the smaller, more urban first district, while Phillips recorded a better result in the larger, more rural second district, which was also the only one in New England to back Donald Trump in 2020.