After just about every primary night this year, I’ve written something like “Donald J. Trump stayed on a narrow but clear path to the Republican nomination.”

After Tuesday night, Mr. Trump has never had a wider path to a majority of pledged delegates.

He swept the Northeastern corridor by a huge margin, smashing any and all expectations based on primaries to date. He won a majority of the vote nearly everywhere, and even carried many of the places where he was expected to be weak — like Montgomery County, Md., or Greenwich, Conn., or Lancaster, Pa.

His huge victory makes a majority of delegates seem well within reach. That’s in part because he amassed more delegates than expected, but also because his strength made wins in Indiana and California seem more likely than before.

He was expected to fare well, but he beat the pre-election polls everywhere. He was at 48 percent in the final Pennsylvania polls; he won 57 percent. He was at 49 percent in the Maryland polls (43 percent excluding the generally dubious polls from A.R.G.); he won 54 percent.