Mexican President Andrés Manuel López Obrador’s ruling political party has won the gubernatorial election in the state of Mexico, dealing a major blow to the Institutional Revolutionary Party, PRI, which had held the state’s governorship for nearly a century without interruption. Morena candidate Delfina Gómez won in Sunday’s governor’s race with over 50% of the votes. Her victory continues to mark the PRI’s decline in Mexican politics since AMLO’s election to the presidency. The state of Mexico is the most populous in the country, surrounding much of Mexico City.

In related news, Mexico’s Foreign Minister Marcelo Ebrard announced Tuesday he’s stepping down to run for president in next year’s election.