José Venustiano Carranza de la Garza was a wealthy Mexican land owner and politician who was Governor of Coahuila when the constitutionally-elected president Francisco I. Madero was overthrown in a February 1913 rightwing military coup. Known as the Primer Jefe or "First Chief" of the Constitutionalist faction in the Mexican Revolution, Carranza was a shrewd civilian politician. He supported Madero's challenge to the Díaz regime in the 1910 elections, but became a critic of Madero once Díaz was overthrown in May 1911. Madero did appoint him the governor of Coahuila. When Madero was murdered during the February 1913 counter-revolutionary coup, Carranza drew up the Plan of Guadalupe, a purely political plan to oust Madero's successor, General Victoriano Huerta. As a sitting governor when Madero was overthrown, Carranza held legitimate power and he became the leader of the northern coalition opposed to Huerta. The Constitutionalist faction was victorious and Huerta ousted in July 1914.