The Party of the Cardenist Front of National Reconstruction (Spanish: Partido del Frente Cardenista de Reconstrucción Nacional, PFCRN) was a Mexican political party that existed from 1987 to 1997.
Known in its infancy as the Socialist Workers' Party (PST), The PFCRN arose in 1987 and followed the political and ideological thought of former Mexican President Lázaro Cárdenas del Río, who was defined as intellectual author of the party.
In 1988, the PFCRN endorsed National Democratic Front presidential candidate Cuauhtémoc Cárdenas Solórzano, son of Lázaro Cárdenas del Río.
In 1994 the PFCRN lost its registry due to weak vote support but recovered it in 1996 and in 1997, and under the new name Partido Cardenista (PC), participated in the first elections for head of government of the Federal District, postulating Pedro Ferríz, a well-known journalist, as its candidate. In these elections it lost its registry definitively and it disappeared.
Due to the length of its name and impronunciable abbreviations, the party was known popularly as El Ferrocarril (English: The Railroad).