He just can’t let it go.

A day after all election results in all states were finally certified — and the final vote shows that Donald Trump lost the popular vote to Hillary Clinton by nearly 3 million votes — the president-elect is again on the defensive.

“Campaigning to win the Electoral College is much more difficult & sophisticated than the popular vote. Hillary focused on the wrong states!” Trump said Wednesday morning to kick off an early-morning tweet storm.

“I would have done even better in the election, if that is possible, if the winner was based on popular vote – but would campaign differently,” he added.

The seemingly unprompted claims come the day election watchers were finally able to compile a final tally from the Nov. 8 presidential election — and two days after the Electoral College formally voted to make Trump the next president of the United States.

According to the Cook Political Report, with all 50 states and Washington, DC, votes counted and certified, Clinton came in with 65,844,610 votes, while Trump had only 62,979,636. Clinton won the popular vote by a 2.1 percentage-point margin (Clinton 48.2 percent, Trump 46.1 percent).

That is, Clinton received 2,864,874 more votes across the country than Trump.

Trump, however, won the Electoral College vote, with 304 votes to Clinton’s 227.

In addition to his griping Wednesday about campaign strategy, Trump said he wasn’t getting the respect he deserves for his fiscally sound campaign.

“I have not heard any of the pundits or commentators discussing the fact that I spent FAR LESS MONEY on the win than Hillary on the loss!” Trump tweeted.