I'm not suggesting it be administered by individuals who can discriminate for one. Also would want strict guidelines for what can be asked, I'm imagining a set of around 100 questions and you just get a random one on your ballot and there's no leeway for states to edit the list. There are a plethora of other aspects that would need to be hammered out because there is absolutely room for fuckery, but that doesn't mean it's not possible. Some states actually ran successful voter test programs prior to the idea being twisted by the South. Just because something's been misused in the past doesn't necessarily mean that's the only potential outcome.

I would also prefer just educating people better so no test would even be necessary, but conservatives won't fund education so we're left with a bunch of dummies just voting for anything that says their political affiliation next to it.