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WASHINGTON — California Sen. Barbara Boxer plans to introduce legislation to eliminate the Electoral College and have presidential elections decided by popular vote, NBC4 Los Angeles reported Tuesday.

It would come on the heels of Donald Trump winning the presidential election last week by virtue of the Electoral College even though Hillary Clinton continues to lead the popular vote by about 1 million votes.

“When all the ballots are counted, Hillary Clinton will have won the popular vote by a margin that could exceed two million votes, and she is on track to have received more votes than any other presidential candidate in history except Barack Obama,” Boxer said in a statement.

More than 4 million people have signed a petition on to get Electoral College electors to vote for Clinton instead of Trump when they meet in state capitals on Dec. 19.

It will be the fifth time a president has been elected by winning the Electoral College but not the popular vote. The last time was George W. Bush in 2000.

“This is the only office in the land where you can get more votes and still lose the presidency,” Boxer said. “The Electoral College is an outdated, undemocratic system that does not reflect our modern society, and it needs to change immediately. Every American should be guaranteed that their vote counts.”

Boxer’s legislation would be the first step to amend the U.S. Constitution. Two-thirds of the House of Representatives and Senate must pass the proposed amendment, then must be passed by three-fourths of the states.

The last successful amendment to the U.S. Constitution was the 27th in 1992 that prohibits the salaries of members of Congress from taking effect until the start of the next set of terms.