LOS ANGELES — To the surprise of few, President Donald Trump has once again claimed without evidence that Democrats are somehow cheating to win California’s primary elections — writing on social media late Wednesday that federal prosecutors in Los Angeles are investigating the matter.

“The Dumocrats are at it again! They are trying to STEAL THE GOVERNOR OF CALIFORNIA PRIMARY, AND THE MAYOR OF LOS ANGELES, PRIMARY, AWAY FROM TWO GREAT REPUBLICAN CANDIDATES. Here we go with the very late and massive numbers of MAIL IN BALLOTS,” Trump posted to his social media platform Truth Social.

“There’s BIG cheating by the Dumocrats in California. Votes are all tied up. May not be in for weeks. Under investigation by the U.S. Attorney’s Office in Los Angeles,” he wrote in a second post. “Why the vote counting DELAY???”

A spokesperson for the U.S. attorney’s office in Los Angeles — run by Trump loyalist First Assistant U.S. Atty. Bill Essayli — declined to comment Thursday morning on Trump’s claims of an investigation.

California Secretary of State Shirley Weber’s office also did not immediately respond to a request for comment.

Gov. Gavin Newsom’s office responded directly to Trump late Wednesday with its own social media post, writing, “Trump is lying about California again — time to take the phone away from grandpa and put him to sleep.”

On Thursday morning, Newsom’s office wrote that there “is a lot of misinformation floating around about California’s election — including from the President,” and recommended people watch a CNN video about California’s election process. It concluded that delays in vote counting in the state are essentially a result of state leaders deciding that providing voters with “last minute options” for casting ballots is more important than a quick count.

“And yes, for the record: we wish the votes were counted faster, too,” Newsom’s office wrote — a nod to the fact that the issue isn’t new.

In an email, Brandon Richards, Newsom’s deputy director for rapid response, said Trump’s claims are part of “a tinfoil hat level conspiracy theory that has been debunked repeatedly.”

The president’s claims of cheating were predicted before the election by both elections experts and Democratic leaders in California, who dismissed them in advance as more baseless bluster from a president beset by low approval ratings.

Those same experts and Democratic leaders acknowledge that California’s system for counting votes takes a long time and should be quickened, but stress that is not because of anything nefarious. Rather, it is because California allows voters to cast ballots by mail up until election day — and then has to count those ballots, which can number in the millions and are subject to manual signature verification.

Trump has long dismissed such explanations. An election denier since he first entered politics more than a decade ago, Trump has pushed skepticism about elections he and his party lose time and again since — most notably when he claimed, again without evidence, that the 2020 election he lost to Joe Biden was stolen.

Trump even challenged Biden’s victory in court, but his claims were rejected completely because neither he nor his attorneys could produce any evidence substantiating them.

He has combined his tactic of targeting undocumented immigrants for political gain with his skepticism of election integrity by claiming, again without evidence, that such immigrants somehow vote in large numbers, particularly in big blue states such as California, despite experts saying there is no evidence of that.

He has alleged that mail ballots — such as those used by the majority of California voters — are a particularly rich source of voter fraud, despite again having no basis for the claim and it being disputed by experts.

A consistent feature of his election fraud claims is that they arise and target races only when Republicans lose or lose ground.

And, he has tried to use the power of his administration to make sweeping changes to election laws to bar mail ballots and require strict voter ID and proof of citizenship measures, despite the control of elections and their rules being constitutionally given to the states.

Those efforts have prompted a wave of litigation between the Trump administration and California and other blue states, with multiple cases pending in the courts over voter ID, proof of citizenship, mail balloting and the role that the U.S. Postal Service may be allowed to play in processing such ballots.

Trump’s latest remarks came as additional vote counting on Wednesday narrowed the advantage of Republican Steve Hilton over his Democratic challengers in the California governor’s race and closed the gap in the L.A. mayoral race between the MAGA-aligned candidate Spencer Pratt, currently running second, and City Councilmember Nithya Raman, who is running third.

The trend was anticipated. Elections experts warned before vote counting began of the potential for a “red mirage,” wherein earlier voting among Republicans and late voting among Democrats — many of whom were unsure of whom to vote for in the two high-profile races — would create an early illusion of Republican victories despite large volumes of liberal votes from major population centers still to be counted.

It is a trend that has played out repeatedly in past elections, and one that does not come as a surprise to careful elections watchers.

Elections officials in California knew such claims were going to be made, as they’ve been made in the past. Some local elections officials made a point of preparing their staffs for baseless claims of election fraud in advance of this year’s primaries. State officials made repeated efforts to explain the reasons why California elections take time, precisely to undercut claims amid counting that the delays were the result of fraud.

But those claims have come regardless, and not just from Trump.

Above an X post Wednesday suggesting Pratt was losing ground to Raman as more counts came in, Florida Gov. Ron DeSantis wrote, “California keeps dumping votes. Odds are shifting because the vote dumps always seem to go one way. Count until you get the result you want?”

Above another X post Wednesday noting that the California count would take time, Katie Miller, a former Trump administration official and conservative podcaster married to Trump’s top advisor Stephen Miller, wrote, “The Democrats are about to steal the LA mayoral race once again using mail-in voting.”

Both of the posts that DeSantis and Miller were responding to were from Polymarket, a prediction market where people can bet on the outcomes of political races, pop culture events and a slew of other subjects.

Such emerging financial markets, which process billions of dollars in bets, are causing rising concerns about political meddling for profit — including by campaign staffers and other individuals with insider knowledge of polling and other campaign information, or by politicians and their operatives, whose public remarks about politics can swing those markets.

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