[2][3][4] Trillanes later confirmed his bid for the office as a member of Aksyon Demokratiko on July 15, when he formally joined the party.

[5][6] The incumbent vice mayor is Karina Teh-Limsico, who is serving her first term after being elected in 2022 with 62.28% of the vote.

[1] She will face a rematch from former councilor PJ Malonzo, whom she defeated in the 2022 vice mayoral race.

The Caloocan City Council is composed of 20 members, 18 of which are elected through plurality block voting to serve three-year terms.

Former representative and 2022 mayoral candidate Edgar Erice was expected to challenge Cajayon-Uy for the seat for the fourth time, with him winning the two previous contests (2013 and 2016).