What's at stake tonight in Arizona on primary night?
Kari Lake is taking on Pinal County Sheriff Mark Lamb and neuroscientist Elizabeth Reye in the race to replace Independent Kyrsten Sinema, who announced earlier this year that she would not seek reelection. The winner will face off in the general election against Democratic Congressman Ruben Gallego, who is running unopposed. Stay with LiveNOW for full coverage after the polls close.