Interesting that President Trump holds the voters favor of 40% to 42% in each early matchup of the polls, against all comers, and 7% to 10% are not counted in most of the poll numbers listed.
The Democrat challengers seem to pull most of the non-Trump voters, the any one but Trump voters in these polls, as of now, about 17 months before the 2020 Election. Bootigeg, Harris, Booker, whoever with a D behind their name, pulls about the same in the noted examples, so again, a anti-Trump sentiment, not a specific campaign value, promise, or sentiment draw.
Bernie and "Ole Joe" with the name recognition still at the top.
Where will Bernie's fans go, when the Democrats stiff them again in the 2020 Primaries? And Warner's? And Booker's? So much to learn, yet.
Is there anyone now announced as running for President who has to give up their current job, if they do not win?