Litigation and personal attacks surround several races we're tracking Tuesday.
MAP: Find your Valley polling places
Here is what you should keep an eye on:
3. A tight race in Congressional District 5
There are several GOP challengers for Rep. Matt Salmon's outgoing seat in District 5. Former GoDaddy executive Christine Jones, state Senate President Andy Biggs, state Rep. Justin Olson and former Maricopa County Supervisor Don Stapley all seek the strong Republican seat.
2. Could court rulings hurt Sheriff Joe?
Maricopa County Sheriff Joe Arpaio could face criminal contempt charges for continuing to profile Latino drivers after a court order barred him from doing so. The Justice Department announced Friday that they will investigate the sheriff. Arpaio squares off against fellow Republican and former Buckeye Police Chief Dan Saban in the primary.
1. Kelli Ward vs. John McCain
U.S. Senate hopeful Kelli Ward and Sen. John McCain have traded jabs in recent weeks, be it through political advertisements or campaign content. Besides McCain's primary challenger, Democratic U.S. Rep. Ann Kirkpatrick is also vying for the seat.
