AL GORE
That guy's political career came to an end in 2000 even though his loss was much closer than Clinton's in 2016. He was nowhere to be seen in the 2004 Democrat field, which eventually narrowed down to some useless jerk who ran for president after a long career as an Easter Island statue.
That's probably the conventional thinking. I am not convinced she won't run in 2020. Four years is a long time. We shall see.