What are the most common polling hours?

As of 2014, a small majority of states open their polls at 7:00 a.m., and a small majority of states close their polling places at 7:00 p.m. In some states polls open as early as 6:00 a.m., and in others they close as late as 9:00 p.m.

BallotPedia.com offers a comprehensive list of polling hours by state and includes information on the particular details of each state. For instance, Washington state does not have polling places because they only use mail-in ballots, and North Dakota leaves polling times up to the municipalities and simply provides time frames in which the polling places must be open.