Democrats officially nominated Joe Biden for president on Tuesday, culminating a comeback that saw the former vice president emerge as the party’s choice to take on Donald Trump in Biden’s third campaign for the White House.

Biden received the 2,374 delegate votes necessary for the nomination at a convention that was restyled in the time of COVID-19 into a video tour across the U.S., substituting for the traditional roll call in a crowded convention hall.

After Delaware cast the final votes from an Amtrak station that Biden used to commute as a senator, the nominee appeared alongside his wife Jill from the classroom at Brandywine High School in Wilmington, Delaware, where she taught English in the early 1990s.