Both the Senate and the House membership remained constant at 30 and 60, respectively.

The Democrats gained a seat in the Senate, leaving the Republicans with a 17-13 majority.

The Republicans maintained their majority in the lower chamber, 33–27, even though the Democrats picked up 6 seats.

The Legislature met for two regular sessions at the State Capitol in Phoenix.

The first opened on January 8, 2007, and adjourned on June 20, while the Second Regular Session convened on January 14, 2008, and adjourned sine die on June 27.