[jqm]

Each potential voter decides if they are informed enough. Or at least interested enough. And the two probably go together.

[Retric]

I find more informed people are often less motivated to vote.

[michaelkeenan]

According to the sidebar in the Wikipedia article on voter turnout[1], increasing education leads to increasing likelihood to vote.

38% - No high school 43% - Some high school 57% - High school graduate 66% - Some college 79% - College grad 84% - Post-graduate

Though, possibly, being educated isn't the same thing as being informed.

[1] https://en.wikipedia.org/wiki/Voter_turnout#Socio-economic_f...

[Retric]

There are barriers to voting that tend to crop up the less white collar your job. One sad issue is lines tend to be vastly longer in poor areas.