By Shannan Mattiace1and Sandra Ley

ucatán state’s homicide level has remained low and steady for decades and criminalviolence activity is low, even while crime rates in much of the rest of the country have increased since 2006. In this research note, we examine five main theoretical expla-nations for Yucatán’s relative containment of violence: criminal competition, protection networks and party alternation, vertical partisan fragmentation, interagency coordin-ation, and social cohesion among the Indigenous population. Wefind that in Yucatán,interagency coordination is a key explanatory variable, along with cooperation aroundsecurity between Partido Revolucionario Institucional and Partido Acción Nacionalgovernments and among federal and state authorities

journal of Politics in Latin America2022, Vol. 14(1) 103–119© The Author(s) 2022Article reuse guidelines:sagepub.com/journals-permissionsDOI: 10.1177/1866802X221079636journals.sagepub.com/home/pla