Team PNoy banked on Aquino's popularity and was leading 9−3 in the surveys, with Loren Legarda emerged topping the Senate election for a record-tying third time.

The presidential election was won by Liberal Party's Benigno Aquino III, defeating Joseph Estrada of the Pwersa ng Masang Pilipino.

The Pwersa ng Masang Pilipino and PDP—Laban parties signed a coalition agreement on April 4, 2012 for the 2013 elections, forming the United Nationalist Alliance (UNA).

The Nacionalistas had already endorsed four candidates: Senators Antonio Trillanes and Alan Peter Cayetano, and Representatives Robert Ace Barbers and Cynthia Villar.

[33] On November 8, Makabayan announced the adoption of five guest candidates: Loren Legarda, Francis Escudero, Koko Pimentel, Cynthia Villar and Grace Poe.

[39] Lakas–CMD, the former ruling party which did not named candidates under their banner, endorsed the candidacies of Nancy Binay and Dick Gordon of UNA, Eddie Villanueva of Bangon Pilipinas, and Cynthia Villar from Team PNoy, Leyte Representative Ferdinand Martin Romualdez announced on mid-April.

This completed the list which earlier included JV Ejercito, Jack Enrile, Gregorio Honasan and Mitos Magsaysay from UNA, and Sonny Angara and Grace Poe from Team PNoy.

Since there are only ten names, the party instructed local officials to endorse two from Tingting Cojuangco, Ernesto Maceda and Migz Zubiri of UNA, and Loren Legarda from Team PNoy, to complete their preferred 12-candidate slate.

[40] Collective leadership: The following are barred from running since they are on their second consecutive six-year term: Only one of the term-limited incumbents who were supposed to be appointed to the Cabinet were given government posts as of January 2014.

[64] Even before the start of the campaign period, candidates had begun releasing infomercials without explicitly stating that voters should vote for them; instead these were called "advocacy ads".

[68] On January 21, Secretary of Transportation of Communications Joseph Emilio Abaya said in a press conference at Malacañang Palace that Aquino himself reminded candidates from their coalition about campaign guidelines on appearing with UNA rallies.

Representative Ben Evardone has challenged the UNA to clarify if they are "fully supportive of President Aquino or has taken the role of the so-called united opposition that stands in the way of his daang matuwid (straight path) reform agenda".

[73] Vice President Jejomar Binay personally picked Cebu City as the site of their campaign launch, to support suspended governor Gwendolyn Garcia.

[78] Samson Alcantara of the Social Justice Society opened his campaign outside his office at the corner of Taft Avenue and Padre Faura Street in Manila.

[86] The erstwhile two-week standoff in Lahad Datu, Sabah between supporters of the Sultan of Sulu Jamalul Kiram III and the Malaysian authorities erupted in a gunfight that caused 14 deaths on March 1.

[87] President Aquino was in a campaign sortie with his ticket on San Fernando, Pampanga when the gunfight erupted, and he had to delay his appearance on the stage as he was monitoring the situation.

[92] In a surprise move, the Supreme Court stopped the implementation of the controversial Reproductive Health Law by issuing a status quo ante order for 120 days.

The White Vote movement led by El Shaddai leader Mike Velarde and 40 Catholic lay organizations endorsed six UNA senatorial candidates Richard Gordon, Nancy Binay, Migz Zubiri, Gregorio Honasan, Mitos Magsaysay and JV Ejercito and three Team PNoy senatorial candidates, Aquilino Pimentel III, Antonio Trillanes IV and Cynthia Villar.

[95] The Purple Vote movement composed of advocates for the reproductive health law endorsed seven Team PNoy senatorial candidates: Sonny Angara, Bam Aquino, Alan Peter Cayetano, Chiz Escudero, Risa Hontiveros, Loren Legarda, and Grace Poe.

[99] Loren Legarda was accused by self-styled public interest advocate Louis Biraogo of allegedly failing to declare her possession of a condominium unit at Park Avenue, New York City for four years until 2011.

Legarda spent the greater part of press conference accusing of a certain "Willie F.", sending journalists "column feeds" related to the Park Avenue property.

All six incumbents, namely Alan Peter Cayetano, Francis Escudero, Loren Legarda, Koko Pimentel, and Antonio Trillanes of Team PNoy, and Gregorio Honasan of UNA, won reelection.

Six neophytes won, namely Sonny Angara, Bam Aquino, Grace Poe, and Cynthia Villar of Team PNoy, and Nancy Binay and JV Ejercito of UNA.

[140] The NBOC proclaimed the final three senators on Saturday night: Cynthia Villar, JV Ejercito and Gregorio Honasan, after only the overseas absentee ballots remained to be canvassed.

If Poe joins the Liberal Party, de Vera said that President Aquino would expect a continuation of his "Daang Matuwid" (straight path) program, while noting out that he does not see a Mar Roxas-Poe tandem.

[148] Her final total of more than 20 million votes gives her the largest mandate to any Filipino in history, beating the record previously held by Bong Revilla in the 2010 Senate election.

[150] After all 12 senators were proclaimed, Ateneo de Manila University mathematics professor Lex Muga pointed out that, in any given time, the National Canvass Report had 60% of the votes go to Team PNoy, 30% to UNA, and 10% to other parties.

[154] As early in April, Miriam Defensor Santiago said that the Senate President for the 16th Congress of the Philippines will come from Team PNoy, and that it will shall come from its oldest members; she tightened the contenders to Sergio Osmeña III, Franklin Drilon, TG Guingona and Cynthia Villar.

[157] Meanwhile, a "senior official of the Liberal Party (LP)" told the Rappler news website that Drilon is almost sure to be the new Senate President, with the positions of Majority Floor Leader and committee chairmanships are the ones being negotiated.

Also, Pia Cayetano was reportedly targeting the majority leadership, her brother Alan Peter the Senate president pro tempore post; Loren Legarda, who had previously served in both two positions, begged off, saying that she is "not interested".