[QUOTE=RealityChuck]
Back in 1972, McGovern changed his VP nominee from Thomas Eagleton to Sargent Shriver. I believe that was after the convention ratified the choice. In any case, the ticket in all states was McGovern/Shriver.
[/QUOTE]
The Eagleton nomination is a good example of how the VP selection process changed, and why.
In 1972, conventions still mattered, and George McGovern wasn’t sure he had nailed down the presidential nomination until the first night of the convention. He didn’t give any thought to a running mate until the day of the VP nomination, at which time, after cursory investigation, he and a small coterie of advisors determined upon Senator Thomas Eagleton of Missouri.
The nomination then went before the convention. In that era, delegates felt free to challenge McGovern’s last-minute surprise choice, and seven other candidates were given nominating and seconding speeches. One of them was Mike Gravel, who resurfaced after 36 years to run for President this year. In addition, delegates cast at least one vote for 62 other candidates, ranging from Dr. Spock to Eleanor McGovern to Martha Mitchell, the crotchety wife of Nixon’s Attorney General.
Eagleton eventually prevailed, with 1,742 out of 3,016 delegate votes, but the proceedings delayed McGovern’s acceptance speech until 3:00 a.m. Eastern time. A few days later, it was revealed that Eagleton had long-standing psychiatric problems and had undergone electro-shock therapy. He resigned from the ticket. The Democratic National Committee, on McGovern’s recommendation, nominated Sargent Shriver as his replacement.
In 1976, Jimmy Carter wasn’t anxious to repeat this fiasco. He wrapped up the nomination in June and immediately began a lengthy vetting and interview process. He announced Walter Mondale as his VP choice before the National Convention, and the convention quickly and efficiently rubber-stamped Mondale.
This has been the model for every VP selection since.