Arizona State Legislature

Congress formed the New Mexico Territory in 1850 consisting of the land that is now Arizona north of the Gila River, along with what is now New Mexico, parts of Colorado and Nevada.[1] In 1853, the territory expanded under the Gadsden Purchase agreement by nearly 30,000 square miles of land south of the Gila River in Arizona, forming the state’s boundary with Mexico.[1] In 1863, President Abraham Lincoln signed the Arizona Organic Act creating the Territory of Arizona. In 1864, the First Territorial Legislature convened in Prescott, the territory’s first capital.[1] The capital moved from Prescott to Tucson and back to Prescott before being permanently established in Phoenix in 1889.[1]

On June 20, 1910, President William Howard Taft signed the Enabling Act, allowing the Arizona Territory to hold a constitutional convention. Elected Arizona delegates convened in Phoenix at the territorial capitol on October 10, 1910, to draft the Arizona Constitution.[1] Although constitutional provisions for prohibition and women’s suffrage were rejected, voters added both within three years of statehood.[1] The new constitution was ratified by voters on February 9, 1911, and Arizona statehood took place on February 14, 1912, after eliminating a provision to recall judges that caused an initial veto by President Taft. A few months later, illustrating Arizona's independent streak, voters reinstated the provision permitting the recall of judges.[1]

Arizona's First Legislature had 19 state senators and 35 state representatives and convened March 18, 1912.[1] The Legislature met on a biennial basis until 1950, when a constitutional amendment provided for annual sessions.[1]

There are 30 legislative districts in Arizona, each of which is a multi-member constituency. Each district elects a state senator and two state representatives for a two-year term. The combining of upper and lower house districts into a single constituency is known as nesting and is found in only seven U.S. state legislatures: Arizona, Idaho, Maryland, New Jersey, North Dakota, South Dakota, and Washington.

Under article 4, part 2, section 21 of the Constitution of Arizona, members of the Arizona Legislature serve two-year terms, and legislators are subject to term limits.[7] Members may only serve four consecutive terms (or eight years) in each house; however, once serving the limit, former members are re-eligible for election after a 2-year respite.[7] Members who are term-limited in one house frequently seek election to other positions within the state.

Party division of the legislature since the 1996 Elections:[8]