Sure, it's just one poll. But savor it. Details below.

Donald Trump has had a horrible week. Some of it was his own doing , much of it was Hillary Clinton’s in refocusing the election from frustration at the establishment to Donald Trump’s fitness for office. But this week is what ‘pivoting to the general’ looks like, and why so many Democrats were eager to do so.

It’s no knock on Bernie Sanders to say so. California is tight, and Bernie might win. He’s run a campaign of ideas that Democrats wanted and needed to hear. Millennials are an electoral force to be reckoned with. But it’s Hillary vs Trump, and it’s already on.

So even if Bernie wins CA (and it’s not clear at all that he will), the primary will have been declared over by the media earlier in the evening (it’s actually been over for a lot longer than that). if Hillary wins narrowly, same thing. You don’t have to like it, but it’s what will happen. In fact, if this weekend’s Virgin Islands (7 delegates, today), and Puerto Rico (60 delegates, tomorrow) go her way, the remaining 122 uncommitted superdelegates could, in theory, end it, since she’s less than 70 delegates short of the 2382 needed to win as of this morning. Me, I think better to let them vote, but the cruel delegate math is what it is.

What you will like is the picture of the general election we saw this week. Hillary outworked, outshined and outclassed Donald Trump, and that’s the way it is going to go down.

And it isn’t just me saying it.

Dana Milbank:

On Thursday, Donald Trump escalated his racist attacks on Gonzalo Curiel, the federal judge hearing one of the fraud cases against Trump University. The presumptive Republican nominee had already called the judge a “Mexican” — the Latino jurist was born in Indiana — and floated the allegation that Curiel’s ethnicity biases him against Trump because of the candidate’s immigration stance. Trump had threatened to use the power of the presidency against the judge, saying “we will come back in November” and people “ought to look into” the judge. Then, in an interview with the Wall Street Journal on Thursday, Trump said Curiel’s “Mexican heritage” presented “an absolute conflict” in hearing a case against him.

x Trump responds to Clinton's charge that he has "thin skin" by telling @jaketapper: "I don't have thin skin. I have strong, very thick skin." Ã¢ÂÂ Teddy Davis (@TeddyDavisCNN) June 3, 2016

x Sounds from this like Hillary Clinton got under that strong, very thick skin. https://t.co/h43SHQEjtd Ã¢ÂÂ adam nagourney (@adamnagourney) June 3, 2016

Brookings:

A pill he can’t swallow So Clinton had to drive a wedge between Trump and his advisers. She had to close off the path where Trump could disguise himself in the protective garb of prudent nationalism. She framed the choice as between America as a superpower leading an international order and America as a rogue state. She detailed why alliances have a practical benefit for the United States. She connected Trump’s worldview with his temperament and explained why it would destabilize the world and weaken America. And she did this by using Trump’s own words over the last three decades. The only way that Trump could effectively rebut the speech would be to disavow dozens of his own prior statements and demonstrate he is a responsible steward of American foreign policy—that he understands why alliances matter, why the United States defines its national interests broadly, and why the U.S. economy does best when the rest of the world does well. But this is the one thing that Trump cannot do. Trump’s view of the world is perhaps more deeply held than any other belief he has. Much as he is on every side of multiple issues, he has been remarkably consistent in his core foreign policy beliefs.