If by sucker you mean in the context of the film's title, then that fits. If we use a more general definition of sucker, then I guess it depends on if the Trump voter wanted exactly what he is delivering. If they are getting precisely what they wanted, then they aren't really a sucker, they are something else.

I think the world is full of suckers right now, both right wing and left wing. Also, full of suckers for CEOs and celebrities. Suckers for AI utopia and so on.

Trump somehow contributed to that radicalization (he is not the sole responsible for it though). I think many who support him don't see it that way, and instead interpret his actions as some sort of cheat codes for progress that cut through a lot of bullshit. I am skeptic of his agenda.

I am, however, also cautious about many of the leftist ideas, specially in the last decade. If made to chose though, I would definitely go left.

I think I'm an orphan of a deceased left that doesn't exist anymore. A left that cares more about things like education and healthcare than about how they look on social media. I don't see much value in discussing leaders (this comment is a rare exception) or amplifying partisan narratives.