The recently established presidents in Argentina, Brazil, and Peru are seeking to implement governmental agendas that represent a policy shift with respect to previous administrations. However, in doing so, they face political and social constraints. Executive politics - that is, the presidential approach to the design of the highest executive agencies and appointment strategies - stands out as a tool to improve presidential leeway and coordination capacity. Since late 2015 the Latin American left has faced setbacks due to the election of President Mauricio Macri of Argentina and President Pedro Pablo Kuczynski of Peru, as well as former vice president Michel Temer's assumption of power in Brazil after the impeachment of President Dilma Rousseff. In Argentina and Peru these power shifts in the presidency were accompanied by minority support in Congress. In Brazil, in contrast, Temer built a large coalition in Congress, albeit within a highly polarised political and social context that threatens its cohesiveness and survival. To face congressional oppositions, attentive publics, and organised social sectors that seek to hinder their policy goals, Latin American presidents need to use their important constitutional policymaking powers - as well as their prerogatives to appoint officials and to design the executive's upper-level structure - wisely and strategically. The three presidents have established smaller institutional presidencies than their predecessors - that is, they have reduced their core structure of close aids and supports. At the same time, they have given more power to the cabinet ministers, as well as to the cabinet coordination units, with the goal of aligning the executive with the president's policy preferences. The constitutional powers that presidents have to conduct the policymaking process, particularly in Congress, are important governing tools, but executive politics represents an equally crucial strategy. Presidents use changes to the executive's design and political appointments to influence the creation of policies and achieve their policy goals. These are important (although often neglected) presidential tools, particularly when presidents are dealing with reform agendas within constraining political environments
