Tucson and Phoenix won a challenge to a state law that required them to hold elections in even-numbered years, but this week Attorney General Tom Horne filed an appeal in the case.

Horne is seeking to have the law enforced. It would make the two cities, and any other charter cities in the state, hold elections during the state and federal election cycles: in the fall of even-numbered years.

The two cities hold their elections in odd-numbered years, and Tucson Attorney Mike Rankin argued in a trial in the Pima County Superior Court that voters decided the schedule when they approved the cities' charters, which are the formal documents that set up the city governments. Not all cities have a charter.

Rankin said explained during the trial, "the impact switching election times would have on our administration of elections, and how it was directly in conflict with our charter provisions."

The state has argued it is more efficient, and cheaper, when cities hold their elections at the same time as other regular elections.

The law was set to take affect in 2014, so even if the Arizona Court of Appeals upholds the law, the upcoming Tucson elections won't be affected.