Democrats hold a modest edge in trader consensus for control of the Arizona State Senate, reflecting forecasts that project them netting the four seats needed to flip the chamber from its current 17-13 Republican majority. All 30 seats are on the ballot November 3, with primaries completed in July and no major incumbent defeats reported. Models such as State Navigate rate Democrats as strong favorites to reach 17 seats, driven by incremental gains in recent cycles and the state's closely divided legislative districts. Republicans retain the structural benefit of their existing majority and incumbency, but the narrow margin and full chamber turnover keep the outcome competitive, with late polling trends or turnout shifts in battleground districts the most likely factors to widen the gap before election day.