Why are there only two parties in America?
Two-party system
The traditional two-party dynamic started to break after a while, especially in early 2000s; alternative parties won elections breaking the traditional two-party systems including Rafael Caldera's (National Convergence) victory in Venezuela in 1993, Álvaro Uribe (Colombia First) victory in 2002, Tabaré Vázquez (Broad Front) victory in Uruguay in 2004, Ricardo Martinelli (Democratic Change) victory in 2009 in Panama, Luis Guillermo Solís (Citizens' Action Party ) victory in 2014 in Costa Rica and Mauricio Macri (Republican Proposal) victory in 2015 in Argentina, all of them from non-traditional third parties in their respective countries.[20] In some countries like Chile and Venezuela the political system is now split in two large multy-party alliances or blocs, one on the left and one on the right of the spectrum[19] (Concertación/New Majority vs Alliance in Chile, Democratic Unity Roundtable vs Great Patriotic Pole in Venezuela).