I'm not saying they all will win or that we should take a Democratic win for granted. It is just that Trump has enough liabilities that anyone running against him has a good shot of winning. (As Atrios pointed out, Obama was never that far ahead of Romney in any head-to-head poll in 2012). So we might as well support the candidate who we really want, not some bullshit story we tell ourselves about who we imagine is the most electable.
new Quinnipiac national poll on 2020 general election shows every prospective Democratic nominee beating Trump :— John Harwood (@JohnJHarwood) December 10, 2019
Biden 51%, Trump 42%
Sanders 51%, Trump 43%
Warren 50%, Trump 43%
Bloomberg 48%, Trump 42%
Buttigieg 48%, Trump 43%
Klobuchar 47%, Trump 43%