Not a huge fan of any one poll in isolation but these results are encouraging. [View all]

[DemocratSinceBirth]

Trump continues to fare very poorly in possible match ups against Democrats for 2020.
We tested Hillary Clinton against Trump this month for the first time, mostly as a
baseline for comparison against other possible Democratic candidates, and Clinton leads
Trump by 5 points at 47/42. 3 Democrats we tested clearly perform more strongly against
Trump than Clinton- Joe Biden who leads by 13 points at 53/40, Bernie Sanders who
leads by 11 points at 51/40, and Michelle Obama who leads by 10 points at 51/41. Biden
and Sanders both win over 10% of people who voted for Trump last fall while losing
almost no Clinton voters.
Other Democrats we tested against Trump are Cory Booker who leads him 47/40,
Elizabeth Warren who leads him 47/41, Kirsten Gillibrand who leads him 42/39, and
Kamala Harris who leads him 41/40. The percentage support the Democrat gets in these match ups varies from 41% to 53% probably depending on their name recognition, but
Trump's support is pretty constant in the 39-42% range against all of these possible
challengers.
Voters also wish by a 52/41 margin that Barack Obama was still President instead of
Trump.

http://www.publicpolicypolling.com/pdf/2017/PPP_Release_National_92817.pdf

Trump will never be more popular than the day he was elected with a minority of the popular vote. The Electoral College can only be so much of a vote magnifier.