 Lack of support for this plan led to Díaz losing the elections of 1872.Towards the end of his term, Lerdo de Tejada, who had already incorporated the Reform laws into the Constitution of Mexico, attempted to modify the constitution to enable his re-election, prompting Díaz to declare the Plan of Tuxtepec.On 21 March 1876, Díaz rebelled against President Lerdo de Tejada.