The Maine Senate has passed a bill that would award the state’s Electoral College votes to the winner of the national popular vote in a presidential election.

The Bangor Daily News reports that the state chamber approved the bill in a 19-16 vote on Tuesday.

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If passed by the state House and signed by Maine Gov. Janet Mills (D), the state would become the latest to join the National Popular Vote interstate compact, which is an agreement among a number of states to give their Electoral College votes to whichever presidential candidate wins the popular vote.

So far, 14 states and Washington, D.C., have joined the pact, which will only take effect if a number of states holding the majority of the Electoral College’s 538 electoral votes join the agreement.

Since the formal body was created in 1787, there have only been five instances where a presidential candidate has been elected without winning the popular vote.

President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE was the most recent to win the office without winning the popular vote. During the 2016 election, Trump lost the popular vote to former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE by nearly 3 million votes. However, Trump won the election after he managed to secure 304 electoral votes.

According to the local paper, the measure has faced some criticism from conservatives who argue the bill will minimize Maine’s voice in the presidential election.