Eugenio Segura Vázquez leads trader pricing at 34% because multiple June and July 2026 surveys within Morena show him ahead of Ana Patricia Peralta de la Peña by 15–22 points among party identifiers, driven by his Senate tenure and stronger reputation scores. Peralta sits at 24.5% on the strength of her reelection as Benito Juárez mayor, while Rafael Marín Mollinedo at 17.7% has gained name recognition but trails on perceived governing capacity. Morena’s 42–57% party identification gives its eventual nominee a wide edge over PAN or Movimiento Ciudadano options, keeping the overall field compressed until the coalition’s internal selection concludes. Recent candidate registrations in late June and steady polling margins have produced little movement since July, leaving room for shifts if later surveys or party decisions alter the frontrunner’s advantage.