He heads the Progressive Alliance, considered one of the rightmost groups of the Broad Front coalition and including the Christian Democratic Party.
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On March 4, 2009 he made public his intentions to become the Citizen's Action Party's official presidential candidate, his candidature being applauded by Ottón Solís, Epsy Campbell Barr (the other precandidates) and deputy José Merino del Río, leader of Broad Front, but was ultimately defeated on May 31, 2009 during the PAC's National Convention.
Before the 2004 elections, Astori was announced to become Finance Minister if the Broad Front won.
Then he was advisor of the deputy Gerardo Vargas with Partido Acción Ciudadana (Citizens Action Party) and again with José Merino's advisor in 2002-2006 with the Frente Amplio (Broad Front).