There seems to be some confusion with respect to the adoption of direct democracy in Arizona as it relates to the March 2, 2015 U.S. Supreme Court oral arguments of Arizona State Legislature v. Arizona Independent Redistricting Commission.
In 1911, citizens of what would become the state of Arizona were not only very supportive of the initiative and referendum processes, they also supported the recall of judges. In February, 1911, Arizonians ratified a state constitution with the initiative, referendum, and recall, with nearly 80% approval. President Taft, however, was no such fan, and in August 1911 he vetoed legislation to make AZ a state because of the judicial recall provision in the AZ constitution. The judicial recall was subsequently removed by the territorial legislature from the draft constitution. Arizonians ratified the revised state constitution in December 1911, without the recall, with nearly 90% approval at the polls. Taft approved legislation in February 1912 creating Arizona as the 48th state. The new constitution included both the initiative and referendum.
In 1912, Arizonians amended Section 1, Article 8 of their state constitution, when they adopted a legislative referendum “extending the recall to all public officers of the State holding an elective office, either by election or appointment.” In that election, men also adopted by a two to one margin a citizen initiative granting women suffrage.
As I mentioned in a post yesterday, the citizen initiative has been used by citizens to adopt numerous election and ethics reforms across the states for more than a century. Indeed, the first statewide initiative was in 1904, when voters in Oregon overwhelmingly (three to one) adopted a direct primary nominating convention law.
More on the history of the referral by state legislatures and the subsequent adoption of the initiative by citizens during the Progressive Era can be found in my 2008 APSR article, available here. More on the use of the initiative to adopt statewide election and ethics reforms can be found in my chapter in Bruce Cain, Todd Donovan, and Caroline Tolbert’s 2008 edited volume, Democracy in the States, here