Happy primary day, Hoosiers! Indiana is easily forgotten on the primary calendar, sandwiched as it is between sexier states like Pennsylvania and Maryland (don't look at me like that — have you seen that flag?). But if you care about how well Congress functions, you'll want to pay attention to today's primaries, even if you don't watch "Stranger Things" and "Parks and Rec" on repeat.

As my colleagues recently so beautifully illustrated, there are several parties within the parties in Congress. On the Republican side, there are pragmatists who fall in line with party leadership — and then there are obstructionists who tend to make life harder for them.

This year, there are three open House seats in Indiana that could send either type of representative to Congress. And because these seats are safely Republican, today's contests, not November's, will effectively determine that. Elsewhere in the state, Rep. Victoria Spartz — the Hamlet from Hamilton County — could be the second incumbent representative of the cycle to lose reelection, and GOP primary voters will also choose who will likely become the next chief executive of this state of nearly 7 million people. So yeah, the stakes are high!

We won't have to wait long to find out the winners: Polls close in most of Indiana (the parts in the Eastern time zone) at 6 p.m. Eastern, with the parts of the state in the Central time zone following suit at 7 p.m. Eastern. Follow along with us for the next few hours, won't you?

—Nathaniel Rakich, 538

Braun's record in the Senate on abortion has earned him an A+ rating from the anti-abortion Susan B. Anthony Pro-Life America. He's introduced several anti-abortion bills, including a parental notification bill last year that would require parents to be notified when their minor child seeks an abortion and give them a chance to stop it. Before the ruling that overturned Roe v. Wade, Braun had suggested that interracial marriage and same-sex marriage, both issues also related to rights to privacy, should be left to the states, before walking that back and saying he'd misunderstood the reporter's question. Still, he has praised Indiana's near-total abortion ban, but he's also said more recently that he expects tweaks in the coming years.

Of course, Braun was only one of many anti-abortion candidates I'm watching tonight. Messmer's projected win in the 8th District (according to reporting by ABC News) adds another anti-abortion victory to the list, and ABC News is now reporting that Baird is projected to win in the 4th District.

—Monica Potts, 538