"In order to get to the 270 electoral votes needed to win the presidency, Trump would have to win all but one or two of the states in which his 2018 approval rating was between 41% and 49%. Some of the more challenging states to win from among this group, based on that approval rating, would be Texas (41%); Pennsylvania, Wisconsin and Michigan (all at 42%); and Arizona and Florida (43%). Trump won all of those states in 2016, and thus it is certainly possible that he can do so again. But he clearly has a lot of ground to make up in those states to get close enough to 50% that he can finish with more electoral votes nationwide than the Democratic candidate."