The story

With the voting irregularities of 2000 and 2004 fresh on their minds, many of the millions expected to go to the polls Tuesday are worried that their vote won't be counted.

Voter preparation should help avoid many of the problems that could prevent them from casting their ballots.

Voters can avoid many hassles by checking online at their local government's Web site to determine where they should go to vote, when the polls will open and close, and what they may need to bring. Read full article »

CNN's Carol Costello and Scott J. Anderson contributed to this report.

All About Elections and Voting • U.S. Presidential Election