If voters are uninformed, it's a failure of the political parties, whose proper role it is to inform people and build opinion blocks.
... problem being with that proper role that "inform people" often doesn't have a very strong correlation to "in a non-deceptive manner"
Their
actual role isn't to inform people, in the sense of actually giving them accurate and relevant information, it's to get votes and damn the guns. As such, that information and opinion building is just chock full of misdirection, distraction, deception, and outright lies all too damned often.
The unfortunate fact is that a functioning democracy
necessarily requires a
very involved and educated/informed (in terms of information relevant to effective governance.) voting base. The less of that a democracy possesses, the less effectively it functions and the more likely it is to turn into something
else. Apathy, ignorance, and misinformation are three of the deadliest poisons that exist for a democratic system.
Figuring out how to improve the whole voting base is the problem, though. Disenfranchisement is nearly as damning to the effectiveness of a democratic system as anything else is. You
need everyone involved, everyone interested, and everyone informed, or cracks start showing, corruption starts growing, and the whole machine stops working as effectively. Biggest issue, really, is trying to do stuff about it when those benefiting from the current situation are actively fighting improvement. We know how to find and present relevant information (when it's not being drowned out, spun so hard it ends up upside down, or actively prevented from being found), we know how to teach people how to analyze and break down that information (when it's actually being taught and the information itself isn't badly flawed), and hell, by and large we even have a pretty damn good idea how to engender interest and investment (at least if we had a good way to shut the goddamn media up and cut out a lot of the ignorance and apathy that's latched on culturally to the process). It's just getting it bloody
done.