Sargent Shriver Was One of Only Two Major Party Vice-Presidential Nominees in 20th Century Not Nominated in a Convention

Ballot Access News:
"On January 18, Sargent Shriver died. He was the Democratic Party’s nominee for vice-president in 1972. He was chosen by the Democratic National Committee, in a committee meeting, after the vice-presidential nominee chosen by the Democratic National Convention resigned from the ticket.

During the 20th century, the only other Republican or Democratic Party vice-presidential nominee not chosen by a national convention was Nicholas Murray Butler, the Republican vice-presidential nominee in 1912. He was chosen by the Republican National Committee after the party’s original nominee, James S. Sherman, died during the campaign, on October 30, 1912."