Not very. Maybe 50%, but I dunno.
I hope he won't be, but I think it's possible that he will be. To me, it's obvious that Trump's a liar, a narcissist, and a deliberate promoter of racial & religious hatred for his own electoral advantage. He's also crazy as a loon when it comes to global climate change. If he isn't deliberately pimping for Vladimir Putin and promoting dictatorship rather than democracy around the world, he's sure giving a good impression of this.
OTOH, the economy is growing well during his first term in office, and unemployment is supposed to be down, and his core supporters seem to love the way he beats up on immigrants and Muslims.
It's hard to predict now whether enough votes will think that his positives outweigh his negatives in 2020 to give him a winning edge in the Electoral College. And we don't have a final report from Robert Mueller's investigation yet.
-- democratic socialist