48-50%, perhaps at the upper end of that range. If there is no war or recession, Trump will gain from (1) voters who were told that if elected, he would be the end of the world or some major disaster and it wasn't; (2) voters who prefer to go with the incumbent; (3) voters who are part of the #WalkAway movement or have been alienated by continued extremism on the left; (4) voters who like to reward a good economy; all in addition to what he got in 2016. Offsetting that, he will lose from voters who had an extreme dislike of Hillary Clinton personally and saw it as a binary choice.
Solid post. There are def going to be a lot of Hillary '16 Trump 2020 voters who simply thought Trump was too much of a risk in 2016 but interestingly Trump will still be running as an outsider even as an incumbent.