WASHINGTON — President-elect Donald Trump said Sunday, without providing evidence, that he had fallen short in the popular vote in the general election only because millions of people had voted illegally.
He leveled his assertion as part of a daylong storm of Twitter posts voicing anger about a three-state recount push.
“In addition to winning the Electoral College in a landslide, I won the popular vote if you deduct the millions of people who voted illegally,” Trump wrote Sunday afternoon.
In an evening tweet, Trump alleged that there had been ‘‘serious voter fraud in Virginia, New Hampshire, and California.’’ His transition team did not respond to questions seeking evidence of the assertions.
In addition to winning the Electoral College in a landslide, I won the popular vote if you deduct the millions of people who voted illegally— Donald J. Trump (@realDonaldTrump) November 27, 2016
It would have been much easier for me to win the so-called popular vote than the Electoral College in that I would only campaign in 3 or 4--— Donald J. Trump (@realDonaldTrump) November 27, 2016
states instead of the 15 states that I visited. I would have won even more easily and convincingly (but smaller states are forgotten)!— Donald J. Trump (@realDonaldTrump) November 27, 2016
Serious voter fraud in Virginia, New Hampshire and California - so why isn't the media reporting on this? Serious bias - big problem!— Donald J. Trump (@realDonaldTrump) November 28, 2016
The series of posts came one day after Hillary Clinton’s campaign said it would participate in a recount effort being undertaken in Wisconsin, and potentially in similar pushes in Michigan and Pennsylvania, by Jill Stein, who was the Green Party candidate.
Trump’s statements revived allegations he made during the campaign, as polls suggested he was losing to Clinton, about a rigged and corrupt system.
There has been no official indication of widespread vote manipulation, illegal voting, or hacking that could have materially affected the outcome of the presidential election.
The lack of evidence, in itself, suggests that Trump would be likely to prevail in any recounts, analysts have said.
The Twitter outburst came as Trump is laboring to fill crucial positions in his Cabinet, with his advisers enmeshed in a rift about whom he should select as secretary of state.
Officially, Trump’s transition team has dismissed the recount effort as “ridiculous” and a “scam,” saying there was no evidence of voter fraud that would justify the recounts.
Clinton’s campaign has also said it has turned up no signs of such fraud or other irregularities, and the Obama administration has issued statements expressing its confidence in the validity of the vote tallies.
But Trump appeared fixated Sunday on the recount and his electoral performance. In a series of midafternoon Twitter posts, not long before he boarded a flight to New York from Florida, Trump boasted that he could have easily won the “so-called popular vote” if he had campaigned only in “3 or 4” states, presumably populous ones.
“I would have won even more easily and convincingly [but smaller states are forgotten]!” he wrote.
The afternoon messages followed a string of early-morning Twitter posts in which the president-elect railed against the recount efforts.
In an initial post overnight Sunday, Trump wrote: “Hillary Clinton conceded the election when she called me just prior to the victory speech and after the results were in. Nothing will change.”
He went on to quote a comment by Clinton during one of their debates, in which she said she was horrified by Trump’s refusal to say that he would accept the outcome of the election.
And he noted that in her concession speech, she had urged people to respect the vote results.
“ ‘We have to accept the results and look to the future, Donald Trump is going to be our President,’ ” Trump wrote on Twitter, quoting Clinton. “ ‘We owe him an open mind and the chance to lead.’ So much time and money will be spent — same result! Sad.”
One person who spoke with Trump over the holiday weekend said the president-elect had appeared to be preoccupied by suggestions that a recount might be started, even as his aides played down any concerns.
Another friend said Trump felt crossed by Clinton, who he believed had conceded the race and accepted the results.
Trump’s aides echoed his concerns about the recount effort in appearances Sunday morning television news programs.
Conway, who was his campaign manager, said on NBC’s “Meet the Press” that Clinton and her campaign advisers would have to decide “whether they’re going to be a bunch of crybabies.”
The Clinton campaign will not contribute financially to the recount effort, but it will have its lawyers present at the recount, campaign officials said.
Clinton leads the national popular vote by close to 2 million votes, but Trump won 290 electoral votes to Clinton’s 232, not counting Michigan. She could conceivably tip the electoral balance in the remote event that all flipped to her in recounts.
Trump returned to New York Sunday evening after spending Thanksgiving weekend at his Palm Beach estate.
His transition team said the president-elect had scheduled a series of meetings Monday with prospective administration hires.
Trump was mostly silent on the brewing recount effort until it became known that Clinton would join it, at least in Wisconsin.
On Saturday, a day after Wisconsin officials said they would conduct the first presidential recount in the state’s history, Clinton campaign attorney Marc Elias said: ‘‘We intend to participate in order to ensure the process proceeds in a manner that is fair to all sides.’’
Elias said Clinton would take the same approach in Pennsylvania and Michigan if Stein were to follow through with recount requests in those states. That loosened Trump’s tongue.
In an interview on “Fox News Sunday,’’ Trump’s incoming chief of staff, national party chairman Reince Priebus, called the recount effort a ‘‘total and complete distraction and a fraud and something that they should drop.’’
Clinton’s lawyer said her team has been combing through the results since the election in search of anomalies that would suggest hacking by Russians or others and found ‘‘no actionable evidence’’ of an altered outcome.
Moreover, Elias said, Trump has a vote lead even in the closest states that well exceeds the largest margin ever overcome in a recount.