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Good morning.

Here’s what you need to know:

• Trump aims for delegates.

There are two races — one for voters, the other for delegates — and Donald J. Trump needs about 390 more delegates to clinch the nomination, but his chances could be hurt on Tuesday by a loophole in Pennsylvania. He says he’s considering whether to court those going to the Republican convention with lavish perks.

Mr. Trump, whose plane has been grounded by the F.A.A., appeared with his family on the “Today” show this morning.

In contrast, the path forward for Bernie Sanders is trickier and narrower. He’s campaigning in Pennsylvania today, while Hillary Clinton is in Connecticut.