Presidential Adviser to the Peace Process Avelino Razon announced his candidacy on August 9, 2009 at the Ninoy Aquino Stadium running for the We Are the Reason Movement, under the Nationalist People's Coalition.

[2][3] Former Mayor and Department of Environment and Natural Resources Secretary Jose "Lito" Atienza ran to reclaim his seat.

Meanwhile, Lim supported the Liberal Party national ticket of Benigno Aquino III and Mar Roxas, while holding his own Kapayapaan, Kaunlaran at Katarungan (Peace, Prosperity and Justice) standard; Moreno supported the Nacionalista Party ticket headed by Manuel Villar.

After Moreno's announcement that he will run under Lim's banner, at least six councilors bolted from Asenso Manileño and went to Razon's side.

[8] Atienza, leader of the Liberal Party wing not recognized by both the Commission on Elections and the Supreme Court, will be the "guest candidate" of the Joseph Estrada-led Pwersa ng Masang Pilipino (PMP).

[9] In the end, Atienza's certificate of candidacy stated that he was nominated by the Liberal Party,[10] but under the "Buhayin ang MayniLA" (Revive Manila) ticket, and as a guest candidate of the PMP.

[11] His guest candidacy was later upgraded to a full-fledged nomination by the PMP as announced by the party's director for political affairs.

Former Rep. Rosenda Ann "Sandy" Ocampo defeated her closest rivals, incumbent Rep. Bienvenido "Benny" Abante Jr. and former Vice Mayor Danilo "Danny" Lacuna.

Moreno had an even easier time against his nearest rival, Bonjay Isip-Garcia as he won with a margin of almost 380,000 votes.