The party is a member of the Foro de Sao Paulo, part of the international Latin American Left Movement (pink tide) of democratic socialism.

Their presidential nominee was Eugenio Trejos Benavides, then the rector of the Costa Rica Institute of Technology.

For the 2014 election the party’s nominee was then congressman Villalta, who was receiving a lot of support according to the polls, something unusual in Costa Rica for a left-wing candidate, and even appearing in some as the frontrunner.

[4] Villalta ended third in the presidential race with 17% of the votes, below PLN's nominee Johnny Araya and PAC’s Luis Guillermo Solís, but increased its parliamentary representation from one to nine seats.

It also won one mayor in the 2016 municipal elections in the Barva canton and in alliance with PAC in Acosta and Montes de Oca.