Morena holds a modest edge in trader assessments for the 2027 Zacatecas state congress election due to its alignment with the federal administration and strong performance in recent national contests, which supports expectations of continued local strength under the current legislature's dynamics. Internal divisions within Morena, including disputes over the state coordinator selection and public defections of municipal leaders to PAN in early October 2026, have introduced volatility and kept probabilities tightly clustered. Fragmented opposition parties such as PRI, PVEM, PT, and PAN trail with lower implied probabilities, reflecting limited recent gains and the mixed-member proportional system that rewards broader coalitions. Upcoming candidate nominations, alliance negotiations, and any shifts in gubernatorial approval ratings could widen or close gaps before voting.