Mailza Assis secured nearly 50% of valid votes in Acre's October 4 first round, advancing to the October 25 runoff against senator Alan Rick, who received about 32%. As the incumbent who assumed the governorship in April after her predecessor's resignation, Assis benefited from established party coalitions including PP, União Brasil, and PL, plus voter recognition from prior vice-governorship and state programs. The remaining candidates split opposition support, leaving Rick as the primary challenger. Prediction market traders reflect this first-round margin and incumbency edge in the overwhelming consensus for Assis, though a runoff allows for shifts from alliance negotiations, turnout differences, or campaign developments before final tabulation.