Recent national polls for Mexico’s June 2027 Chamber of Deputies election show Morena holding a wide lead in voting intention, while the fragmented opposition leaves PAN consistently ahead of PRI, MC, PVEM, and PT. PAN’s decision to contest the race independently after ending its prior alliance with PRI has reinforced its standing as the primary challenger, with multiple surveys from August and September 2026 placing it in second place overall or tied for that position. PRI trails due to lower preference levels and elevated voter rejection, while MC remains competitive in some measurements but lacks PAN’s breadth of support. Traders price PAN highest for second place because these patterns in effective vote share and state-level positioning have held steady in the most recent data.