Voting has already begun in West Virginia, with 35,000 people casting their ballots since early voting started a week ago.
The state is using touch-screen electronic voting machines. Officials say out of the thousands who have voted so far, there have been a handful of complaints of votes not going through.
"The last thing that we want is for people to be disgruntled and to not let us know that they had a problem at the voting booth," says West Virginia Secretary of State Betty Ireland. "We regret that a very small number of people actually had that problem, but we were able to fix it so everyone of those persons got to vote for whomever he or she wanted to."
All the touch-screen machines have paper trails to make sure each vote gets recorded correctly.