I think they decide the amount of polling places based on population. I know in my little town there is only one. It was busy today but no real lines.The polls are open until a set time but if there is a line it will stay open. They are open 7:00am till 8:00 pm I think. If you know it won't be convenient for you you can vote an absentee ballot. Many states have early voting. All are accommodated. This is expected to be one of the largest voter turnouts in many years. People are passionate about this election. Apathy is what got us into this mess. I am so proud to see so many standing up and voting.