This would be an interesting book... if I had time to read...
"Against Democracy," by Jason Brennan. Seems he argues that some votes should have more weight based on a person's political knowledge.
From the Vox interview: We know that an unfortunate side effect of democracy is that it incentivizes citizens to be ignorant, irrational, tribalistic, and to not use their votes in very serious ways. So this is an attempt to correct for that pathology while keeping what’s good about a democratic system.
Given the rising tribalism I've seen in the past decade or more... I'd say he's right about the central problem.