Independents are on the rise despite a sizable recent increase in registered Republicans in Maricopa County. However, Democrats saw a net loss in March, according to county data.

Arizona will be among the first to test Trump's executive order in a July election. But questions about voter ID could boot ...

Clean-burning cars were at the center of Arizona's infamous "alt-fuels fiasco" of the early 2000s, a nine-figure budget debacle sparked when Arizona legislators wildly miscalculated how popular an ...

Key parts of the federal code that permit alternative fuel cars to access the HOV lane are set to expire on Sept. 30, and ...