I just saw yesterday the Millennials are actually flocking to Trump and the Republicans and away from the Democrats. Over 10% have switched since 2016.
If people actually speak to Millenials, there are MANY that aren't pod-eating Antifa-loving dolts who, among other things, don't WANT want other people's stuff. They are probably more libertarian than your average Deplorable and, for example, may bring a few gay friends or sober pot legalization fans out to the range with them.
If people can get around those elements then the Dems will keep putting up loser candidates that repel Americans and Trump is guaranteed to destroy whoever they put up in 2020 AND we'll have a Red Wave this November.
There is an interesting millennial barista at one of my local eateries. Prefers working in a place with tips, likes working two 25/30 hour jobs and wants free market health care choices. I heard him tell a customer once that only about 5% of people who like socialism understand what it really is.