In 2018, five statewide ballot measures were certified to appear on the Arizona ballot in 2018.

On the ballot

Summary of campaign contributions

See also: Ballot measure campaign finance, 2018

The following chart illustrates how much support and opposition committees had amassed in campaign contributions for each measure on the ballot:

Arizona Proposition 125	$0.00	$0.00
Arizona Proposition 126	$10,000,000.00	$122,878.23
Arizona Proposition 127	$23,648,953.56	$31,167,037.00
Arizona Proposition 305	$53,800.61	$594,032.30
Arizona Proposition 306	$20,075.00	$10,501.97

Cost per required signature

See also: Ballot measure signature costs, 2018

The cost-per-required signature (CPRS) is a comparison of the amount of money spent on the petition drive to the number of signatures the state requires for an initiative to make the ballot. The following chart illustrates the CPRS for ballot initiatives and veto referendums:

Getting measures on the ballot

Citizens of Arizona may initiate legislation as either a state statute or a constitutional amendment. In Arizona, citizens also have the power to repeal legislation via veto referendum. The Arizona State Legislature may place measures on the ballot as legislatively referred constitutional amendments or legislatively referred state statutes. In addition, the Arizona Commission on Salaries for Elective State Officers is one of only a few state committees that have the power to place measures on the ballot.

To qualify a measure for the ballot, citizens were required to file at least 150,642 valid signatures for initiated state statutes, 75,321 valid signatures for veto referendums, and 225,963 valid signatures for initiated constitutional amendments.

The 2018 state legislative session ran from January 8, 2018, to April 17, 2018, during which time the Arizona State Legislature was able to place legislative referrals on the ballot.