Clinton won 2 million more votes than Trump and some academic and voting experts have suggested that the election results in three key states should be challenged because of possible irregularities in voting patterns that they say could be the result of hacking.
U.S. President-elect Donald Trump said in a tweet on Sunday that he won the popular vote in the November 8 election "if you deduct the millions of people who voted illegally", though he provided no evidence of widespread voter fraud.
"I would like to promise and pledge to all of my voters and supporters and to all of the people of the United States that I will totally accept the results of this great and historic presidential election - if I win", Trump to supporters at a OH rally in October.
Clinton's legal team said on Saturday it had agreed to participate in a recount of Wisconsin votes after the state's election board approved the effort requested by Green Party candidate Jill Stein, which Trump has called "ridiculous".
He later added: "Serious voter fraud in Virginia, New Hampshire and California - so why isn't the media reporting on this?"
Trump has been railing over the weekend against a recount effort led by the Green Party, that he has dubbed a "scam".
Stein, who won about 1.0 percent of the national vote, has said she wants a recount to guarantee the integrity of the USA voting system, a push that came after some computer scientists and election lawyers raised the possibility that hacks could have affected the results.
Baca, a Democratic elector and former state senator from Colorado, said she has been working on Republican electors since she joined the effort the day after the election and she admits, "I'm like Don Quixote".
Supporters of Democratic presidential nominee Hillary Clinton want a recount of the ballots in three states on the basis of experts' statements with an eye toward ruling out the hacking of voting machines in the November 8 election, although her campaign has not yet issued a statement on the matter. We owe him an open mind and the chance to lead.' So much time and money will be spent - same result! The electoral college in all the states, including Michigan's 16 electors, will cast their votes on December 19. In 2012, he tweeted: "The electoral college is a disaster for a democracy".
"The Electoral College is actually genius in that it brings all states, including the smaller ones, into play".
He offered no evidence to back up his allegations about illegal votes - although frequently claimed during his campaign that the election was "rigged".