This cycle, all 30 of the seats in the Arizona State Senate are up for election, and Republicans currently control the chamber by a margin of 2 seats. Meanwhile, all 60 of the seats in the House are up for election, with Republicans currently controlling the chamber by a margin of just 3 seats.
The Arizona House is competitive this year, while the Republican Party is seen as possessing the advantage, the chamber is in contention it's going to be a race to watch. The Arizona Senate is likewise under Republican control but is seen as a toss-up this cycle.
The state has operated under a Republican trifecta for the past 13 years.
Polls close in the state at 7 p.m. local time, or 9 p.m. EST.