PORTLAND, Maine (AP) — Maine will become the latest to join a multistate effort to elect the president by popular vote with the Democratic governor’s announcement Monday that she’s letting the proposal become law without her signature.

Under the proposed compact, each state would allocate all its electoral votes to whoever wins the national popular vote for president, regardless of how individual states voted in an election.

Gov. Janet Mills said she understands that there are different facets to the debate. Opponents point out that the role of small states like Maine could be diminished if the electoral college ends, while proponents point out that two of the last four presidents have been elected through the electoral college system despite losing the national popular vote.

Without a ranked voting system, Mills said she believes “the person who wins the most votes should become the president. To do otherwise seemingly runs counter to the democratic foundations of our country.”