Overall kind of a lot of turnover actually…only one Clinton became president, and he was never VP. The other Clinton got beat out by the first black president for the nomination in 08, and then she lost to some guy who had zero political experience.
If anything, we learned that being black doesn’t exclude you from being president, being female doesn’t exclude you from being a major party nominee, and you can still become president even running for office for the first time at age 70. The promise of the statement is more true than ever.
Jeb! is a hole in the theory, not every major states governor who is the son of a former president can become president themselves.