Lazo has a long and varied trajectory in Cuban politics. He has been secretary of the Cuba Communist Party for the Matanzas, Santiago de Cuba, and Havana provinces, a member of the Cuban parliament since 1981, and Vice President of the Council of State since 1992. 
Lazo ana historia ndefu katika siasa za Cuba; amekuwa ni katibu wa chama cha kikomunisti cha Matanzas huko Santiago Cuba na mikoa ya Havana, mbunge wa bunge la Cuba tangu mwaka 1981, na makamu wa rais wa Halmashauri ya taifa tangu 1992.