[4] It was announced that they met the threshold on July 13, 2016, allowing Presidential candidate Gary Johnson to appear on the ballot.

On 8 September 2017, Androscoggin County commissioner Zakk Maher became the LPME's first elected official when he defected from the Maine Republican Party.

[6] After the 2018 election, the LPME lost party status as it did not receive 10,000 cumulative votes of registered Libertarians.

In order to maintain this status, the party must have 10,000 registered voters cast ballots in the November 2022 state election.

On December 14, 2020, Maine State Representative, John Andrews of House District 73, announced his intent to leave the Republican party and enroll as a Libertarian, becoming Maine's first Libertarian state legislator,[9] although he rejoined the GOP in 2022 and will run for re-election as a Republican.