Arizona could become the blueprint for Democrats looking to build state power

TUCSON, Arizona — For Arizona Democrats, this election is about more than delivering Kamala Harris a key Sun Belt state. It is a test of the party’s down-ballot strength as Democrats mount their most aggressive campaign yet to flip the state Legislature.

Taking control of Phoenix has emerged as the top target nationwide for Democrats focused on rebuilding state power after more than a decade of GOP dominance in state capitals.

After…