Tuesday is election day in Indiana. Voters will decide on several key races in the state's primary election.That includes presidential nominations and a six-way race for the GOP's nomination for governor.See below for everything you need to know. When do polls open/close? Polls open at 6 a.m. Tuesday and close at 6 p.m.What to bring to the pollsVoters must present a government-issued photo ID to vote in the Indiana primary on May 7. According to the Indiana Secretary of State's Office, the ID must meet the following criteria:Your ID must display your photo. Your name on the ID must conform with your voter registration record. Conform does not mean identical. Your ID must contain an expiration date and either still be current or have expired sometime after the date of the last General Election (Nov. 8, 2022). Certain military and Tribal IDs with no expiration date or an “indefinite” expiration date are acceptable. Your ID must be issued by the state of Indiana, U.S. government, or a Native American Indian Tribe or band recognized by the U.S. Government.Where can I vote?Numerous polling locations will be open on Indiana's primary day for registered voters to cast their choices.To find an open polling location in your area on Election Day, click here. Polls are set to be open on May 7 from 6 a.m. to 6 p.m. local time.What's on the ballot?The Indiana primary election will feature numerous races that will have big implications for November.The most-watched is the GOP race for governor, a competition of office-seekers who all have cast themselves as outsiders in an appeal to conservative voters.Six Republicans are vying for the seat being vacated by outgoing Gov. Eric Holcomb, who is term-limited. Mike Braun, Brad Chambers, Suzanne Crouch, Eric Doden, Curtis Hill and Jamie Reitenour are vying for the Republican nomination. The winner will presumably run against Democrat Jennifer McCormick, who is running unopposed in the primary. U.S. Sen. Mike Braun has been endorsed by Republican former President Donald Trump, who won the state by 16 points against Democrat Joe Biden in 2020.Elsewhere on the ballot, Braun's decision to run for governor and leave the Senate has opened up a seat for the November election.On the Republican side, U.S. Rep. Jim Banks is the sole candidate in the primary. He will be opposed by either Marc Carmichael or Valerie McCray as the Democratic candidate.For a full list of what to expect on the Indiana primary ballot, click here.