First, a hand-drawn infographic!
Ok, I may not have captured everyone. And some were favorite sons (alas, no daughters) in the earlier cycles, but bear with me.
This is a list of all of the Democratic candidates for President since 1952 who 1) lost once and 2) ran again. A circle means they were the nominee in that cycle.
Some names not on this list: every Democrat elected to the Presidency since 1960 with one exception.
1) John F. Kennedy. First time presidential candidate in '60. Tried (unsuccessfully) to get on the national ticket with Stevenson as the VP pick in '56. Won the nomination and General Election.
2) Jimmy Carter. First time presidential candidate in '76. Tried (unsuccessfully) to get on the national ticket with McGovern as the VP pick in '72. Won the nomination and General Election.
3) Bill Clinton. First time presidential candidate in '92. Thought about it in '88 but passed. Won the nomination and General Election, twice.
4) Barack Obama. First time presidential candidate in '08. Won the nomination and General Election, twice.
LBJ is on the list, and he did win on his own in '64 (against Goldwater, not the strongest opponent the GOP could have fielded that cycle). That said, he lost the bid for the nomination in '60, came to the office only on the passing of JFK, and was clearly in for a tough battle for the nomination in '68 when he famously declared that he would neither seek, nor accept the nomination of the Democratic Party for President.
And of course there were those who lost on a national ticket as a VP or VP candidate and who ran for the Presidency later...and lost again (Muskie in '68 and '72 respectively, Shriver in '72 and '76 respectively, Lieberman in '00 and '04 respectively). Mondale, of course, won in '76 with Carter (when he passed on the race himself, citing a lack of "fire in the belly") but lost in his own bid in '84. Al Gore and Joe Biden have already been accounted for in this chart.
So...while the past is not always prologue...I would like to see some new names come to the fore for the Democratic Party in 2020. History has not been kind to the "not one-and-done" club. You have to admit, we have run (and won with) some excellent first-timers.
Stay tuned, as more will follow.