When Zelaya was finally removed in a 1909 coup led by Juan José Estrada, Chamorro became Chairman of the Constituent Assembly and leader of the country's Conservative Party.
Kada je Zelaya konačno sišao sa vlasti pučem 1909. godine kojeg je predvodio Juan José Estrada, Chamorro je postao predsjednik Ustavotvorne skupštine i čelnik Konzervativne stranke.