The Triumvirate had a conservative policy, and had removed the radical supporters of the late Mariano Moreno who promoted the May Revolution and managed government the first months.
[3] Both the Morenist peoples and the new military group opposed the conservative policy of the First Triumvirate, and wanted a government that fostered the ideas of the Age of Enlightenment, such as the early Primera Junta headed by Moreno.
The people organised a riot all across the city, headed by Bernardo de Monteagudo, and attacked the houses of Pueyrredón and Bernardino Rivadavia.
At the night of 7 October, a military unit headed by San Martín and Alvear stationed in front of the Buenos Aires Cabildo, in support of the popular request.
Nicolás Rodríguez Peña was appointed by 172 votes against 12, Antonio Álvarez Jonte by 147 against 35, and Juan José Paso by 96 against 87.