>> let's go to anderson. >> as republicans see their base of support shrinking, certainly in the suburbs, as we've been talking about, democrats are looking to rebuild their blue wall ahead of 2020. let's go back to david chalian with a look at more exit poll results. >> we'll take a look at four critical midwestern states and look at trump's approval rating according to the exit polls from voters in those states from a week ago. let's start here in michigan. you can see that donald trump is at 45% approval, 55% disapproval. upside down by 11 points there. take a look at the next state, in pennsylvania, he's upside down by ten points. wisconsin, he's upside down by five points. 47% approve of him, but a majority here still disapprove. and of course, in ohio was the one shining moment for him across this midwest bloc, he's rightside up. he has 53% approval in ohio, 47% disapprove. donald trump won all four of those states in 2016. the first was that blue wall you're talking about. and according to these numbers