Republican Presidential Candidate Donald Trump's children Donald Trump, Jr., Ivanka Trump, Eric Trump and Tiffany Trump celebrate on the convention floor during the second day session of the Republican National Convention in Cleveland onTuesday. (AP Photo/Carolyn Kaster)

CLEVELAND —Donald Trump was formally nominated for the presidency by Republican delegates here on Tuesday night, a landmark moment in American political history that capped the business mogul’s surprising conquest of the GOP.

Trump formally reached the threshold of 1,237 delegates at 7:12 p.m. Eastern time, with votes cast by delegates from his home state of New York.

Trump’s clinching votes were cast by his own son, Donald Trump Jr., who spoke for the New York delegation.

“It is my honor to be able to throw Donald Trump over the top in the delegate count tonight,” he said. “Congratulations, Dad, we love you!”/Washington Post. More here.