Independent registered voters have surged in Arizona and in Maricopa County who have been mobilized thanks to Prop 121 Open Elections and Open Government. These newly registered Independent voters are pissed off and ready to vote and are disgusted with Party partisanship.

From the Independent Voters of American who quote the AZ CENTRAL:

Arizona: Arizona’s independent voters are now the second largest group in the state –  36 percent of registered voters are Republican, 30 percent are Democrats and 33 percent are independents. The Arizona Republic has even gone so far as to suggest that Arizona Democrats can’t compete with the independent surge – they have a “branding problem.” Since the 2008 Presidential election, Democrats have lost 75,000 voter registrations, while independents have gained 217,000.  While electoral math guru Nate Silver has reminded us that Arizona (probably) isn’t a swing state, the growth of registered independents over the last four years likely means Arizona will be a swing state in future elections.