Maine’s secretary of state has removed Donald Trump from the state’s presidential primary ballot under the US constitution’s insurrection clause, becoming the first election official to take action unilaterally in a decision that has potential Electoral College consequences.

While Maine has just four electoral votes, it is one of two states to split them.

The former president won one of Maine’s electors in 2020, so having him off the ballot there should he emerge as the Republican general election candidate could have major implications in a race that is expected to be narrowly decided.

The decision by Democratic secretary of state Shenna Bellows follows a December ruling by the Colorado Supreme Court that removed Mr Trump from the ballot there under Section 3 of the 14th Amendment.

Colorado is a Democratic-leaning state which is not expected to be competitive for Republicans in November.

Ms Bellows found that Mr Trump could no longer run for president because his role in the January 6 2021 attack on the US Capitol violated Section 3, which bans from office those who “engaged in insurrection”.

She made the ruling after some state residents, including a bipartisan group of former legislators, challenged his position on the ballot.