Arizona Revised Statutes Title 16. Elections and Electors § 16-222. Vacancy in the office of United States senator or representative

A. When a vacancy occurs in the office of United States senator or representative in Congress by reason of death or resignation, or from any other cause and except as provided in subsection D of this section, the vacancy shall be filled at the next general election. At such an election the person elected shall fill the unexpired term of the vacated office.

B. For a vacancy in the office of representative in Congress, if the next general election is not to be held within six months after the date of the occurrence of the vacancy, the governor shall call a special primary election and a special general election to fill the vacancy. The governor shall call the special primary election and establish its date within seventy-two hours after the office is officially declared vacant. Notwithstanding §§ 16-313, 16-351 and 16-542, for a candidate for office at an election held pursuant to this subsection, the following apply:

C. For a vacancy in the office of United States senator, the governor shall appoint a person to fill the vacancy. That appointee shall be of the same political party as the person vacating the office and, except as provided in subsection D of this section, shall serve until the person elected at the next general election is qualified and assumes office. If the person vacating the office changed political party affiliation after taking office, the person who is appointed to fill the vacancy shall be of the same political party that the vacating officeholder was when the vacating officeholder was elected or appointed to that office.

D. If a vacancy in the office of United States senator occurs more than one hundred fifty days before the next regular primary election date, the person who is appointed pursuant to subsection C of this section shall continue to serve until the vacancy is filled at the next general election. If a vacancy in the office of United States senator occurs one hundred fifty days or less before the next regular primary election date, the person who is appointed shall serve until the vacancy is filled at the second regular general election held after the vacancy occurs, and the person elected shall fill the remaining unexpired term of the vacated office.

E. For a vacancy in the office of representative in Congress that occurs simultaneously with at least one hundred additional vacancies in the office of representative in Congress as prescribed by 2 United States Code § 8, a special general election to fill the vacancy in this state shall be held not more than forty-nine days after the declaration of the vacancy unless a regularly scheduled general election or previously scheduled special general election is held within seventy-five days after the declaration of the vacancy.