This was in total contrast to his May 9, 2012 pronouncement that he would only serve for one term should he be elected to the post back then, after which he would subsequently retire from politics.

[4][5] Unlike Estrada, his running mate in 2013, three-term incumbent vice mayor Isko Moreno was term-limited, as he had served for three consecutive terms.

Sources indicated that although Manila leaders identified with Estrada under the local Asenso Manileño party, Moreno included, were pushing for former Manila vice mayor Danilo Lacuna to be his running mate, Estrada was said to have seriously considered his current city administrator, Jojo Alcovendaz, to be his vice mayoral candidate under his party, despite the latter's San Juan residence.

However, the Estrada camp, upon further consultation, eventually chose former 4th district councilor and city social services head Honey Lacuna, Danilo's daughter, as his running mate.

Estrada, with running mate Honey Lacuna, held their proclamation rally at the Liwasang Bonifacio, while Lim, with running mate Benjamin Asilo started their campaign at Plaza Miranda, on March 28, 2016, two days after the official start of campaigning for local candidates.

[11] Among Estrada's senatorial candidates that he supported were Joel Villanueva, Panfilo Lacson, Manny Pacquiao, Martin Romualdez, Getulio Napeñas, Neri Colmenares, Sherwin Gatchalian, Richard J. Gordon, Migz Zubiri, Sergio Osmeña III, Francis Tolentino and Isko Moreno, the incumbent vice mayor of the city.

[12] Lim's campaign started with his visit to the Islamic Center in San Miguel, together with Liberal Party's presidential bet Mar Roxas.

[13] Roxas' running mate Leni Robredo and President Benigno Aquino III also attended the rally.

Three-term incumbent Francisco "Isko Moreno" Domagoso, who was re-elected with 63% of the vote in 2013, was term-limited and barred from running again for this post this election.

Also running for this district were incumbent three-term councilors Ian "Banzai" Nieva and Ernesto Dionisio Jr. as well as Manuel "Manny" Lopez.

He ran unopposed because his supposed opponent, Councilor Numero "Uno" Lim, was nominated by the party-list group Tanggol Maralita Inc. (TAMA).

Her opponents were former representatives Joey Hizon and Mary Ann Susano as well as incumbent three-term councilor Josie Siscar.

Incumbent councilors Dennis Alcoreza, Ernesto Dionisio Jr., and Erick Ian Nieva were term-limited and could not seek re-election.

Former councilors Rolando Sy, Jesus Fajardo Sr., Ernesto Dionisio Sr., Arlene Koa, Moises Lim, Martin Isidro Jr., and Abraham Cabochan each tried to regain a seat in the council.

Incumbent councilors Joel Chua, Ernesto Isip Jr., and John Marvin "Yul Servo" Nieto were term-limited and could not seek re-election.

Among those who were gunning for a council seat were former councilors Luisito Chua, Eduardo "Wardee" Quintos XIV, and Victoriano Melendez.

Incumbent councilors Cristina Isip, Josefina Siscar, and Raymundo Yupangco were barred by term limits from seeking re-election.

Castañeda served in the city council as the president of the Liga ng mga Barangay from 2004 to 2007, while Ocampo represented the 5th district from 1995 to 1998.