ALEXANDER BURNS and JONATHAN MARTIN

CLEVELAND — Donald Trump was formally crowned the Republican nominee for president at the party’s convention on Tuesday, ending a tumultuous primary season but not nagging questions about his polarizing candidacy as he once again found himself embroiled in controversy.

With his campaign appearing in disarray after his wife, Melania, delivered a convention speech cribbed in part from a 2008 convention address given by Michelle Obama, Trump officially claimed the nomination. The Manhattan real estate developer and media provocateur advanced in his improbable quest for the White House when his son, Donald Jr., announced on the convention floor that New York’s delegates had delivered the votes needed to become the Republican standard-bearer.

“It’s not a campaign anymore, it’s a movement,” said the younger Trump, surrounded by his three adult siblings. Reflecting his father’s brashness, he pledged to put New York, which has not voted Republican in a presidential election in 32 years, in play.

Yet even at the moment of Donald Trump’s triumph, the Trump campaign reeled from open recriminations between past and present advisers. And the gap between Trump and the party he now aims to lead yawned as wide as ever across the convention.

By the time each of the country’s states and territories were finished with the traditional roll call, 721 delegates had cast their vote for candidates other than Trump — the most significant expression of party dissent since 1976, when Republicans had a contested convention.

© 2016 New York Times News Service