On September 30, 2015, the current city mayor Guia Gomez, declared that she will run again for the mayoralty seat in the elections, in a political convention held in the Filoil Flying V Arena.

Her running mate is incumbent Councilor Janella Ejercito, daughter of Senator Jinggoy Estrada.

Gomez is actively supporting the candidacy of Liberal Party presidential candidate Mar Roxas,[1] despite being part of Pwersa ng Masang Pilipino which have been affiliated with the United Nationalist Alliance (UNA) party of fellow presidentiable Jejomar Binay.

Few days later, on October 6, 2015, during the gathering held in San Juan Gym, Vice Mayor Francis Zamora declared his intention to run as Mayor of San Juan, he promised to end the Estrada dynasty in the city who ruled the political landscape for over 46 years.

[4] Zamora also proposed a public debate against Gomez to present the platforms for the city's progress.