No president has ever lost a re-election campaign while having an unemployment rate under 5.0 percent (the current rate is 3.8 percent). So I never expected Trump to lose re-election. However if Hillary runs again, the Democrats might as well just prepare for 2024 and skip 2020. Hillary is a clusterfukk for democrats.
-Hillary still has appeal with college educated white women and they were loyal for her against Bernie and even against Trump (51 vs 44). These college educated white women shift suburban votes in North Carolina, Wisconsin ( Madison) and Michigan. If those well educated college women feel like Hillary has been attacked they may stay home on Election Day ( this effects Trump Midwest Wall).
-If you elect Hillary Clinton as your candidate you deflate your party enthusiasm ( less voters helps trump) and Hillary riles up white men ( who loathe her)

Hillary is a real problem for Democrats.