Date of Birth: 
About Marcos Leonel Posadas
- Marcos Leonel Posadas Segura (born October 8, 1938, Tampico) is a Mexican politician.
- Leonel Posadas joined the Mexican Communist Party in April 1956.
- He became an electrician in the petroleum sector by profession.
- In 1964 he was included in the Central Committee of the party.
- The following year he became the general secretary of the Mexican Communist Youth, a position he occupied until 1970.
- Between 1973 and 1978 he was the director of the official Communist Party newspaper Oposición.
- In 1979 he became a member of the Executive Committee of the Communist Party.Posadas became a co-founder of the United Socialist Party of Mexico (PSUM).
- In PSUM he was responsible for Organization and International Affairs.
- He later became co-founder of the Mexican Socialist Party (PMS) and the Party of the Democratic Revolution (PRD).
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