President-elect Donald Trump looks towards the media as he arrives at a costume party at the home of hedge fund billionaire and campaign donor Robert Mercer in Head of the Harbor, New York, Dec. 3, 2016. Reuters

A petition to elect Hillary Clinton as president and keep Donald Trump from being sworn in as commander in chief is winning over the internet. Trump won 306 electoral votes to Clinton's 232, but she is the popular vote winner, with 65,259,681 votes to his 62,692,056.

"Donald Trump has not been elected president. The real election takes place Dec. 19, when the 538 Electors cast their ballots – for anyone they want. We are calling on 'Conscientious Electors' to protect the Constitution from Donald Trump, and to support the national popular vote winner," the Change.org petition reads. At least 4,726,395 supporters had signed it as of Sunday morning.

A website supporting the anti-Trump effort includes a section titled "The Danger of Donald Trump" that declares "Donald Trump represents a unique threat to our Republic and our Constitutional system of government." It states reasons such as "He would be the only president in American history who has never held public office," "He has encouraged violence at his rallies" and "He has advocated violating international treaties," among others.

"Trump is unfamiliar with the duties of his office or the processes of government, and he is inexperienced and impulsive. He is truly unfit to be Commander in Chief," the site states.

The founder of the petition said he knows it's unlikely Trump will be blocked from becoming president, but he had to express his reservations about the election results. He is urging the electors who will vote this month under the Electoral College system for president to keep Trump out of the White House. Electors are chosen by party officials and are not required to vote for the candidate selected by the most voters in his or her state. But most do.

"Yes, I think it's a longshot, but I also think we're living in strange times," Daniel Brezenoff, who created the petition, told The Associated Press. "If it was ever plausible, it's this year."