When Prestes won the March 1930 Presidential election, the Alliance denounced his victory as fraudulent, while Vargas's running mate, João Pessoa, was assassinated in July. The revolution began on October 3, 1930 and quickly spread throughout the country; by October 10, both Rio Grande do Sul and Minas Gerais had announced their support. Luís was deposed on October 24, and the Brazilian Military Junta of 1930 took over; Vargas assumed leadership of the junta on November 3, 1930, marking the end of the First Republic and beginning of the Vargas Era.