What 2018 tells us about Trump's chances in 2020

For all of the talk just a few months ago that President Trump might be tough for Democrats to beat, the size of this likely Democratic field is testament to the perceived value of the 2020 Democratic nomination. Keeping in mind that Trump received just 46 percent of the popular vote in 2016 and how little he has attempted to expand his base beyond that point, a president of 20 months who has yet to see a Gallup weekly job-approval rating above 45 percent—which also happens to be his approval rating in the networks’ exit poll, with 54 percent disapproving—is very, very vulnerable.

Consistently, Gallup polling has shown a ratio of at least 1.4 voters strongly disapproving his performance for each one who strongly approves, and in the exit poll, 46 percent strongly disapproved while just 31 percent strongly approved. These are very troubling signs. Two years ago, Trump beat Hillary Clinton by 4 points among independents while Republican House candidates topped their Democratic rivals by 6 points among independents. In this year’s midterms, the 30 percent of the electorate that described themselves as independents voted for Democrats by a 12-point margin, 54 to 42 percent,