Generally, the election officials working the booths know most of the people in the precinct. We have not had any instances of substantial fraud that could be rectified by the Voter ID Law, which is an admitted attempt toimpede certain segments of the voting population from casting a vote.
That's a controversial stance. People in small towns may know each other, but in larger population areas it's impossible to know who is who. However they shouldn't change laws during a major election year. Lots of elderly and disabled will end up getting shut out. People who are healthy have no excuse in not getting a photo id (rich or poor).
I found this website that breaks down voter id requirements by state:
http://www.ncsl.org/legislatures-elections/elections/voter-id.aspx
