Proposition 100 was a ballot measure to temporarily raise the Arizona state sales tax by 1 cent per dollar, with the proceeds going to education, public safety, and health and human services. The referendum was passed by voters in a special election on May 18, 2010. The measure amended Article IX of the Arizona State Constitution, raising the state sales tax from 5.6% to 6.6%, and included a clause which would automatically repeal the increase on May 31, 2013. Two-thirds of the revenue was designated for primary and secondary education, while one-third of the revenue was designated for both health and human services and public safety.[1][2]
