MICHAEL BLOOMBERG, to borrow a line from Elizabeth Warren, is running in the wrong presidential primary.

The billionaire ex-mayor of New York formally announced his candidacy over the weekend — but Warren’s recent rebuke of Joe Biden seems an even better fit for Bloomberg.

Remember: Biden, for all his sins, is a lifelong Democrat. Bloomberg, however, served as an elected Republican between 2001 and 2007. This was a period during which he enthusiastically endorsed the reelection of George W. Bush and also addressed the Conservative Party’s annual conference in the U.K.

Bloomberg is so right-wing that he makes Biden sound like Bernie. Much has been made of Bloomberg’s blind defense of Wall Street, including his astonishing claim that it was Congress and “not the banks that created the mortgage crisis”; his ridiculous comparison of Warren’s modest wealth tax to Venezuela; his cynically timed apology for presiding over unconstitutional “stop-and-frisk” practices in New York, as well as his shameful failure to apologize to the city’s Muslim residents for subjecting them to an Orwellian surveillance regime.