In this paper we will study three political parties (AP in Ecuador; FA in Uruguay and FPV in Argentina) which demonstrate the so-called "turn to the left" in Latin America and have emerged as a viable alternative to the neoliberal paradigm of the '90s. These were affected by certain institutional amendments which aimed precisely at recovering the central role of the State, which took upon itself the responsibility for political and partisan life, and to re-establish itself as a representative agent, designating some democratic decision-making principles in its internal organization. Despite their differences, in the three selected cases, the new electoral regulations had theoretically similar aims. Nevertheless, here we consider that the change in rules and the consequent establishment of this nominative mechanism has not produced positive results in any of the analyzed political parties.