Ariz. Const. art. IX, § 20
(2) Expenditures in excess of the limitations determined pursuant to subsection (1) of this section may be authorized as follows:
(b) Upon the affirmative vote of seventy per cent of the members of the governing board for expenditures directly necessitated by a natural or man-made disaster not declared by the governor, subject to the following:
(3) As used in this section:
(b) "Cost of living" means either:
(d) "Local revenues" includes all monies, revenues, funds, fees, fines, penalties, tuitions, property and receipts of any kind whatsoever received by or for the account of a political subdivision or any of its agencies, departments, offices, boards, commissions, authorities, councils and institutions, except:
(f) "Population" means either:
(10) This section does not apply to any political subdivision until the fiscal year immediately following the first regularly scheduled election after July 1, 1980 for the nomination or election of the members of the governing board of such political subdivision, except that a political subdivision, prior to the fiscal year during which the spending limitation would first become effective, may modify the expenditure limitation prescribed pursuant to subsection (1) of this section, by the provisions prescribed by subsections (2) and (6) of this section, or may adopt an alternative expenditure limitation pursuant to subsection (9) of this section.
A county may conduct a special election to exceed the expenditure limitation prescribed pursuant to subsection (1) of this section for the fiscal years 1982-1983 and 1983-1984, on the first Tuesday after the first Monday in November in 1981.