The 2013 Senate election in the Philippines occurred on May 13, 2013 to elect one-half of the Senate. The senators elected in 2013, together with those elected on 2010, will comprise the Senate's delegation in the 16th Congress.
The proclamation of all the 12 senators was done three days after Election Day, on May 16. all incumbents that ran successfully defended their seats, while all new senators were elected.
Voting for senators is via nationwide, at-large basis via the plurality-at-large voting system. A voter has twelve votes: the voter can vote less than twelve but not more than it. These votes are tallied nationwide and the twelve candidates with the highest number of votes are elected to the Senate. The Commission on Elections administers elections for the Senate, with the Senate Electoral Tribunal deciding election disputes after a Senator has taken office.
| Place | Senator | Party | Coalition | Voted at* | Date proclaimed | Religion | Prior congressional and elective executive positions | Born | |
|---|---|---|---|---|---|---|---|---|---|
| 1st | Grace Poe | Independent | Team PNoy | San Juan | May 16, 2013 | Roman Catholic | 1968 | ||
| 2nd | Loren Legarda | NPC | Team PNoy | Malabon | May 16, 2013 | Roman Catholic | Senator (1998–2004, 2007–2013) | 1960 | |
| 3rd | Alan Peter Cayetano | Nacionalista | Team PNoy | Taguig | May 16, 2013 | Evangelical Charismatic Christian | Senator (2007–2013) Member of the Philippine House of Representatives from Lone District of Taguig-Pateros (1998–2007) Acting Vice Mayor of Taguig (1998–1998) Member of the Taguig Municipal Council from the 1st district (1992–1998) | 1970 | |
| 4th | Francis Escudero | Independent | Team PNoy | Sorsogon City | May 16, 2013 | Roman Catholic | Senator (2007–2013) Member of the Philippine House of Representatives from Sorsogon's First District (1998–2007) | 1969 | |
| 5th | Nancy Binay | UNA | UNA | Makati | May 16, 2013 | Roman Catholic | 1973 | ||
| 6th | Sonny Angara | LDP | Team PNoy | Baler | May 16, 2013 | Roman Catholic | Member of the Philippine House of Representatives from Aurora's Lone District (2004–2013) | 1972 | |
| 7th | Bam Aquino | Liberal | Team PNoy | Quezon City | May 17, 2013 | Roman Catholic | 1977 | ||
| 8th | Koko Pimentel | PDP–Laban | Team PNoy | Cagayan de Oro | May 17, 2013 | Roman Catholic | Senator (2007–2013) | 1964 | |
| 9th | Antonio Trillanes | Nacionalista | Team PNoy | Caloocan | May 17, 2013 | Roman Catholic | Senator (2007–2013) | 1971 | |
| 10th | Cynthia Villar | Nacionalista | Team PNoy | Las Piñas | May 18, 2013 | Roman Catholic | Member of the Philippine House of Representatives from Las Piñas' Lone District (2001–2010) | 1950 | |
| 11th | JV Ejercito | UNA | UNA | San Juan | May 18, 2013 | Roman Catholic | Member of the Philippine House of Representatives from San Juan City Mayor of San Juan City (2001–2010) | 1969 | |
| 12th | Gregorio Honasan | UNA | UNA | Marikina | May 18, 2013 | Roman Catholic | Senator (1995–2004, 2007–2013) | 1948 | |
*Senators are elected on a nationwide, at-large basis.
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