Lorenia Valles Sampedro leads the Sonora governor race at 68% implied probability after Morena designated her state coordinator for the Defense of the Transformation in late September 2026 following an internal survey victory over rivals including Javier Lamarque Cano and Célida López Cárdenas. The Labor Party and Green Party have since aligned with her ahead of the June 6, 2027 election, consolidating the governing coalition behind the continuity candidate backed by outgoing Governor Alfonso Durazo. Recent surveys show Valles at 35-40% support against PAN’s Antonio Astiazarán at roughly 34% and Movimiento Ciudadano’s Luis Donaldo Colosio Riojas near 15%, consistent with Morena’s 40%+ party preference. Precandidacy periods begin in December 2026, leaving limited time for challengers to close the gap.