Georgia voters, start your engines: Polls are open from 7 a.m. to 7 p.m. for Tuesday’s primary election, and there are plenty of offices with contested races. Here’s what you need to know:

WHERE DO I VOTE?

Before you go, find personalized sample ballots and your polling location on the secretary of state's "My Voter Page" website (www.mvp.sos.ga.gov). If you mailed in an absentee ballot, you can also check that site to see whether it has been received.

If you're already out, you can check the same information on the state's new "GA Votes" mobile apps. You can download the free apps for both Apple and Android operating systems using either the iTunes app store for an iPhone or iPad, or Google Play for Android.

WHAT TO BRING WITH YOU

Georgia requires voters to show photo identification when they vote in person. Approved forms of identification include a Georgia driver’s license, even if it’s expired; a state-issued voter identification card; a valid U.S. passport; and a valid U.S. military photo ID.

PICK A BALLOT

Because the state conducts an “open” primary, voters may vote on the ballot of any party — you make your choice at the polls. You cannot, however, vote in more than one party’s primary.

So, once you pick a ballot, you have to stick with that same political party even if there is a runoff (in other words, you can’t cast a Republican ballot in the main primary but then vote in a Democratic runoff).

PROBLEMS

If you see or experience problems, first contact your local elections office. If local officials can't help, the secretary of state's office has an online complaint form via the "elections" tab at www.sos.ga.gov.