UPDATE: 11:30am 11/7/12
According to The Gallatin County Election Office, 99% of the votes are in, and these are the latest results. Some ballots are still being counted, and so the results could change. It's important to remember that these are unofficial results.
As of now, 17 states have laws requiring voters to present photo ID before voting. Some have suggested these regulations may act to disenfranchise poor and minority voters, who could be less likely to have such identification. Last month a judge in Pennsylvania blocked the state from enforcing its voter ID laws in the 2012 election.