Election Day is Tuesday, but you may have some questions before you head to the polls. On Election Day, the polls are open from 7 a.m. to 7 p.m. Click here for a list of polling locations in Harris County. You can check the status of your voter registration on the Texas Secretary of State’s website or by calling your county election office. Can I vote on Election Day if I did not vote in the primary? At the state level, the races include state Senate, state House, state Supreme Court and Texas Railroad Commission.