Once the annexation to Spain was concluded, he devoted himself fully to politics, joining the party of Buenaventura Báez, in whose six-year regime he was inspector of Customs and governor of Puerto Plata.

In 1873, when the President began to lose political control due to the size of the public debt, González, anticipating the imminent triumph of the liberal or blue revolution, declared against his boss, leading the so-called Unionist Movement.

Master of the situation, González issued a decree by which he prohibited the entry into the Republic of the restoration and anti-Baecista hero Gregorio Luperón and the former presidents Pedro Antonio Pimentel and José María Cabral, until the constitutional Government was installed.

Then, believing that the frustrated uprising of Cáceres was due to his condescending policy, he accepted the advice of his supporters and proclaimed himself Supreme Leader of the Nation by the will of the People, calling a Constituent Assembly to modify the Magna Carta for not conforming to the circumstances of the country.

The Santiago liberals restructured their party under a new patriotic association called the Peace League and in February 1876 prepared to overthrow González, whom they accused of violating the Constitution, becoming a dictator, and embezzling public funds.

Since no one wanted a new civil war, the blues and Baecistas or reds reached an agreement through which Congress would desist from hearing about these accusations in exchange for González's resignation, which he made effective immediately.

Even when Espaillat declared a state of siege throughout the country and appointed Luperón Minister of War and Navy, González arrived at the gates of the capital on October 5 and on December 20, the President resigned, taking refuge in the French consulate.