I would agree that democracy works better the more informed the voters are, however the very idea of taking steps to discourage 'voting while ignorant' is highly controversial in the US. We have a history of disenfranchising voters which is at the back of most people minds when the topic comes up.
If someone would choose to not vote in a particular race on their ballot because they didn't know which candidate was the (D) and which was the (R) that's hardly disenfranchisement.
But it's also not the main point I was trying to argue.
