Many municipalities and school districts in Arizona are holding elections today, be they regular or special elections.
In Tempe, they're holding a regularly scheduled election for three seats on the City Council with a ballot question about raising the City's bed tax (sample ballot here).
In Scottsdale, the election concerns a number of proposed updates to the City's charter and also a hike to Scottsdale's bed tax, too (sample ballot here).
In addition, many school districts are holding override elections.
Whether you live in Scottsdale, Tempe, or another part of Maricopa County, you can find your polling place here, courtesy the Maricopa County Recorder's Office. If you live in another part of the state, contact your local county's elections department for polling place info.