Venezuela’s president, Nicolás Maduro, faces a real challenge to his presidency this weekend, with a united opposition of Edmundo González and María Corina Machado campaigning for victory. What will it take to unseat Maduro and the Chavismo legacy that he represents? Andrew Mueller speaks with opposition advisor Paola Bautista de Alemán, Latin America analyst Christopher Sabatini and Venezuelan historian Miguel Tinker Salas.