Something like half don't right now.
You have to understand that Trump's initial successful election against Hillary helped forestall a reckoning that's been brewing in the Republican party for decades.
You've got Bush and Reagan era economists whose actual campaign slogan would be>Let's have maximal stock prices by maximizing for corporate power
These Republicans, while they're more than willing to pander to a racist or homophobe to pick up the last batches of votes they need, mostly just care about keeping corporate taxes low, capital gains and income taxes low, unions and workers as disempowered as possible, easy access to offshoring for businesses, and an active military presence abroad as a way to implement industrial business stimulus.
This is currently coming to a head with the part of the party that mostly cares about social issues and doesn't really give a fuck about any of that, because as a paradox of history most of the republican base are rural or suburban white dudes who couldn't give zero fucks about corporate finance or stock markets, and is actually hurt by a fuckton of the other stuff. This group isn't comfortable with (and generally doesn't know many) minorities, LGBT people, people who were born in other countries, etc., and this group is therefore mostly interested in having policy focus on preventing any shifting of power towards any of these groups, and supporting politicians who'll pass legislation to structurally fuck with them to otherwise "own the libs".
The issue is that these two Republican factions don't actually have much in common besides voting as a coalition, and the latter group would happily burn down the former, because business interests realized that maximizing share prices mean selling to the biggest market possible, and this means liberal inclusivity that the second group fucking hates.
The comic is a potshot against group 1 members by a member of group 2, which Trump is seen as leading.