Flint Hill Elementary School 6:10 a.m. More than 100 voters were lined up and ready to vote by the time the polls opened at 6 a.m. At Flint Hill Elementary School in Vienna. Polls are open from 6 a.m. to 7 p.m. For those who are planning to vote on their way home from work, election officials want them to keep in mind that they need to be in line by 7 p.m at their poll location in order to cast their vote. As long as they are in line by 7 p.m., they will be able to vote.