|Slogan||One vote against the incumbent|
|Merged into||United Nationalist Alliance|
Genuine Opposition (GO) was the political multi-party electoral alliance of the parties senatorial line-up for the 2007 Philippine midterm elections, which is in opposition to President Gloria Macapagal Arroyo. It was originally called the United Opposition (UNO), created by opposition stalwart and Makati Mayor Jejomar Binay in June 2005 to unite all politicians who wanted to impeach President Gloria Macapagal Arroyo. UNO then reorganized itself and changed its name to Grand and Broad Coalition (GBC), with the UNO party under that coalition. On February 15, 2007, the group changed its name again to Genuine Opposition after a meeting with Senate President Manny Villar in his office in Las Piñas and because of the defection of former opposition senators Edgardo Angara, Teresa Aquino-Oreta and Tito Sotto to GMA's senatorial slate.
Mainstream party members:
The United Opposition Coalition was created by Makati Mayor Jejomar Binay in June 2005 to unite all politicians who wished to impeach Philippine President Gloria Macapagal Arroyo. The UNO started scouting candidates for the Senate as early as October 2006 to claim a large share of the Senate seats. In January 2007, UNO started short-listing its nominees after a large number of interested personalities wanted to join the opposition. The UNO changed its name on February 12, 2007, at the Club Filipino in San Juan, Metro Manila to "Grand and Broad Coalition" (GBC). On February 15, 2007, the group changed its name again to "Genuine Opposition" (GO) after a meeting with Senate President Manny Villar in his office in Las Piñas. GO became the opposition coalition with eight parties under its wing, including its predecessor, UNO. Though Senate President Manny Villar and Senate Majority Leader Francis Pangilinan are running under the Opposition, they remain independent candidates as in the 2001 election. On February 28, 2007, Genuine Opposition dropped Francis Pangilinan as its adopted candidate. After the elections, GO reverted to being the United Opposition, with Binay as head, but still maintaining the support of the other parties that comprised GO.
The first slogan is "PLAN Co REVOLT". P stands for Pimentel, L stands for Legarda, A stands for Alan, N stands for Noynoy, Co stands for Coseteng, R stands for Roco, E stands for Escudero, V stands for Villar, O stands for Osmeña, L stands for Lacson, and T stands for Trillanes. The PLAN Co REVOLT partylist (literally, My plan is to revolt) means "Revolt against corruption and poverty". The second slogan is "Isang boto lang po laban sa nakaupo." (literally, One vote against the incumbent.).
|Benigno Aquino III||LP||Representative from Tarlac (1998–2007); only son of former Senator Benigno Aquino Jr. and former President Corazon C. Aquino (1986–1992) and the elder brother of the actress Kris Aquino.|
|Alan Peter Cayetano||NP||Representative from Taguig-Pateros (1998–2007); first son of late Senator Renato "Companero" Cayetano and the younger brother of current Senator Pia Cayetano (2004–2010). He is also the husband of the house representative of Taguig-Pateros Ma. Laarni Lopez-Cayetano.|
|Nikki Coseteng||Independent||former senator (1992–2001) and former Quezon City Representative (1987–1992).|
|Francis Escudero||NPC||House Minority Floor Leader (2001–2007) and Representative from Sorsogon (1998–2007), Lawyer and son of former Marcos cabinet member Salvador "Sonny" Escudero.|
|Panfilo Lacson||UNO||Senator (2001–present) and once aspired to be the mayor of Manila. He was also the former Chief of the Philippine National Police.|
|Loren Legarda||NPC||TV Personality (TV Journalist), former 2004 Vice Presidential candidate and former Senator (1998–2004).|
|John Henry Osmeña||UNO||former senator (1971–1972; 1987–1995; 1998–2004).|
|Koko Pimentel||PDP–Laban||1990 Bar Topnotcher, Lawyer, son of Senate Minority Floor Leader Senator Aquilino Pimentel Jr.|
|Sonia Roco||AD||Widow of late Senator (1992–2001), 1998 and 2004 presidential candidate, and Education Secretary Raul Roco (2001–2002) who died in 2005.|
|Antonio Trillanes||UNO||detained military officer, leader of the Magdalo group and the leader of the Oakwood Mutiny in Makati in 2003.|
|Manuel Villar||NP||former Speaker of the House and former Senate President (2006–2008) and senator (2001–present).|
8 out of 11 candidates won the possible 11 seats in the Senate namely: (in order of votes received)