It has been a rough few weeks for Donald J. Trump and his team: a bruising loss in Wisconsin, a public campaign shake-up, and some high-profile missteps and gaffes, including his reference to the attacks on the World Trade Center as occurring “on 7-11.”

In a lengthy interview in his office on the 26th floor of Trump Tower on Tuesday, shortly after casting a ballot for himself and hours before the polls closed, the usually boastful Mr. Trump seemed a bit more humbled as he reflected on his “evolving” campaign and looked to the challenges ahead.

Alongside his oldest son, Donald J. Trump Jr., and his spokeswoman, Hope Hicks, Mr. Trump spoke freely, talking about whether to court delegates with lavish perks like visits to his mansions.

Below are some condensed excerpts from the conversation.

On what it was like to vote for himself in New York on Tuesday: I got over to the booth, a lot of people on the street. Obviously, they saw somebody was coming, and when I got out, it was all cheers. And then I went in and I got the voter slip, and I saw my name, and I said: “Oh, that’s very interesting. I’m voting for myself as president of the United States.” And it does sort of hit you, a little bit differently than when you’re thinking of it in a different context. You see your name, and it says “president of the United States” on a quite nicely printed form. And check the box. And it’s very big for not very many names. So it’s a great honor. Honestly, it’s a great honor.