Arizona’s 6th Congressional District remains one of the most closely watched House races heading into the November 3 general election, with prediction markets assigning Democrat JoAnna Mendoza an 82.5% implied probability of victory over Republican incumbent Juan Ciscomani. Forecasters rate the contest a toss-up based on its narrow partisan balance and history of close results, yet trader consensus reflects Mendoza’s edge in recent fundraising totals exceeding $7.3 million, a June polling average showing her ahead or tied, and voter concerns over federal policy impacts on local costs and healthcare access. Early voting began October 7 in a district where Democrats have carried recent statewide contests, while Ciscomani’s consistent alignment with the current administration’s agenda has become a central campaign issue for both sides.