Arizona’s presidential primary Feb. 5 could be a barometer of several things: the level of John McCain’s popularity within his home state GOP, the strength of the Hispanic vote, and the power of the controversial immigration issue.

Both major parties in Arizona limit participation in their primaries to voters registered in their party. As of July 2007, there were 2,649,367 registered voters in Arizona--1,023,508 Republicans, 873,301 Democrats, and 752,558 independent and third-party voters.

		DEMOCRATS	REPUBLICANS
THE CALENDAR
Primary Date (polling hours)		Feb. 5 (6 a.m. - 7 p.m.)	Feb. 5 (6 a.m. - 7 p.m.)
Filing Deadline		Dec. 17, 2007	Dec. 17, 2007
Filing Procedure		Candidates must file a nominating paper with the secretary of state
THE DELEGATES
Number (% of national total)		67 (1.5%)	53 (2.2%)
Distribution:
	By district	37 (from 3 to 6 per district)	24 (3 per district)
	At-Large	12	26
	Pledged PEOs	7	—
	RNC members	—	3
	Superdelegates	11	—
Method of Allocation		Proportional—15% of vote needed in party-run primary to win a share of statewide or district delegates.	Winner-take-all—statewide winner takes all the at-large and district delegates.