Given recent laws/cases in the US a Voter ID article is in order. While this article will contain a lot of information specific to the US (cause thats what I know) it should include any applicaple international information to give a world wide view (I don't know if other countries have voter id or not).

This article will be created here on the discussion page, drawing in information from other wikipedia articles. and moved to the Article Page when it has reached a stub quality. 

Lemmey  talk 
Information found thus far
Georgia Law
Supreme Court Case

Outline
Overview
History -laws, lawsuits, court rulings
US Laws by state
Current Bills in state legislatures.
See Also
References