What did Donald Trump do today?

He complained about people voting.

Yesterday, California Governor Gavin Newsom issued an executive order that will provide mail-in ballots for all registered voters in the state for the November elections. 

Trump embarrassed his party last month by saying, in effect, that more people voting is bad for Republicans—although it's not clear this is true. Five states conduct most or all elections via mail-in ballots, and it hasn't changed their partisan makeup. Today, Trump exploded again on Twitter about it, saying:

So in California, the Democrats, who fought like crazy to get all mail in only ballots, and succeeded, have just opened a voting booth in the most Democrat area in the State. They are trying to steal another election. It’s all rigged out there. These votes must not count. SCAM!

It's not clear what "Democrat area voting booth" he is talking about, or whose votes he thinks "must not count" in an election conducted by mail.

Trump has never really acknowledged the validity of any election he doesn't like the results of. He refused to promise in advance of the 2016 elections to abide by the result if he lost. After he won the electoral vote in 2016, Trump insisted with no evidence that five million non-citizens had illegally voted. He then spent taxpayer money to form a "commission" to investigate it. It promptly folded, having found no evidence of voter fraud.

In his very next tweet, sent seven minutes later, Trump urged his followers to use mail-in ballots in a competitive special election in California this Tuesday. It's too late for anyone to request a ballot by mail for that election. (He also called that election a "SCAM," without explanation.)

Undermining Americans' faith in democratically elected leaders was the main goal of the Russian sabotage of the 2016 presidential election.

Who cares?

• Undermining American democracy is the job of its enemies, not its president.