US President-elect Donald Trump has asserted he won the popular vote on November 8 “if you deduct the millions of people who voted illegally”.
The Republican, who won the all-important electoral college count, offered no evidence to back his claim.
It comes after the camp of Democratic rival Hillary Clinton said it would support a vote recount in Wisconsin initiated by a Green Party candidate.
Mrs. Clinton won about two million votes more than Mr. Trump in the popular vote.
However, Mr. Trump surpassed the required 270 electoral votes to win the presidency. This was based on the state-by-state contests.
In a tweet, he wrote: “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.”
In his follow-up tweets, the Republican wrote: “It would have been much easier for me to win the so-called popular vote than in the Electoral College in that I would only campaign in 3 or 4 states instead of the 15 states that I visited.”
“I would have won even more easily and convincingly (but smaller states are forgotten)!”
Mr. Trump also alleged “serious voter fraud” in Virginia, New Hampshire and California – states won by Mrs. Clinton – accusing US media of not reporting on that issue.
Earlier on Sunday, the president-elect reminded his Democratic rival that she had already admitted defeat, and published remarks from the presidential debates in which she had urged an acceptance of the poll results.
At the time, Mrs. Clinton was reacting to Mr Trump’s refusal to respect the outcome.
Mr. Trump narrowly beat the Democratic candidate in Wisconsin, where a recount of the votes was initiated last week by Green Party candidate Jill Stein.
Dr. Stein also wants recounts in Michigan and Pennsylvania, citing “statistical anomalies”.