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%
In 2012 Obama was basically never up that much over Romney in national polling.