He is the brother of former 6th district representative and current city mayor Luis Ferrer IV.

After the enactment of RA 9727 establishing the legislative districts of Cavite,[2] he ran for congressman in the 2010 elections under Lakas-Kampi-CMD and as an adopted candidate of the Nacionalista Party.

Both of them won in their respective positions, with Antonio earning 46,575 votes against Liberal Party candidate and former vice-mayor Fernando "Totie" Campaña.

[4] Ferrer is the first city mayor of General Trias, following a cityhood referendum held in December 12, 2015.

Ferrer ran for a second term as mayor in the 2016 general elections, earning 70,997 votes over Nationalist People's Coalition candidate Annalyn Jubilio, serving as his first full term as city mayor.