This chapter explains the performance of the Centro Democrático in Colombia and its concurrent success at the national level and underachievement at the subnational level. It argues that this disparity is linked to two interrelated variables: the security cleavage along which the Centro Democrático has developed its partisan identity, and the party’s weak subnational partisan structures. Security issues mobilize voters on the national level, but are too broad to be relevant in local elections.