He was drawn into politics in his twenties, spending five days in jail for his involvement in a university strike and becoming a founding member of the Unified Socialist Party of Mexico (PSUM, 1987), the Mexican Socialist Party (PMS, 1987) and the Party of the Democratic Revolution (PRD, 1989) which he left in April 1991.
Like other artists of the Mexican muralism movement, he was politically active, a member for thirty years of the Mexican Communist Party then of the Unified Socialist Party of Mexico.
Nava once again ran for Mayor with the back drop of his Potosíno Civic Front (FCP), supported by the National Action Party (PAN) and the Unified Socialist Party of Mexico (PSUM).
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