Atienza started his political career in 1968 when he organized the Democratic Youth Movement. He was one of those who survived the
Plaza Miranda bombing in 1971. After the 1971 elections, Atienza was hired by then Manila Mayor
Ramon Bagatsing as chief information officer at the City Hall. He worked under Mayor Bagatsing for almost ten years. He later became a
barangay captain in 1972, serving in this capacity for 10 years. During Martial Law, Atienza was arrested twice for exposing human rights abuses under the
dictatorship regime of President
Ferdinand Marcos. He remained with the opposition even if he was on constant threat of incarceration for opposing Marcos. Atienza was first elected as Member of
Parliament in the then
At-large Congressional District of Manila under the Batasang Pambansa in 1984 and served until Marcos was peacefully ousted during the
People Power Revolution of 1986. Under the
administration of President
Corazon Aquino, Atienza was appointed general manager of the
National Housing Authority (Philippines) in 1986 and he promoted low-cost housing for teachers and police officers. Together with former Manila police general
Alfredo Lim running for mayor, Atienza ran for vice mayor of Manila. The two defeated the incumbent slate of then-Mayor
Mel Lopez. The tandem won a second term in 1995.
Manila mayorship When Lim resigned to run for President of the Philippines in
1998, Atienza was elevated to mayor to finish Lim's second term. He won his first full term in
1998 and took his oath of office on June 24. After former president
Joseph Estrada's arrest on April 25, 2001, Atienza claimed during a radio interview to have brought numerous Estrada supporters to the pro-Estrada rally at the
EDSA Shrine, which preceded the
May 1 riots caused by the rallyists' march to
Malacañang Palace. Atienza was again re-elected in
2001 and finally in
2004. During his term as mayor, numerous heritage buildings in Manila were demolished, notably the
Jai Alai Building, which used to be the best
Art Deco building in all of
Asia before its demolition. The
Supreme Court ruled on April 17, 2007, that
Franklin Drilon was the real president of the
Liberal Party and not Atienza and has approved the Daza-Drilon Amendments to the LP's Charter. It also ruled that all certificates of nomination signed by Atienza are worthless unless they moved to another political party like
Batangas Governor
Armando Sanchez and
Manny Pacquiao, who moved to
KAMPI, and
Mike Defensor, who moved to
Lakas-CMD, in February 2007. Voting 9–5, the court said the amended Salonga Constitution extended Drilon's term to November 2007. On July 16, 2007, the Supreme Court dismissed with finality a motion for consideration filed by Atienza (en banc resolution dated July 5, 2007). COMELEC earlier ruled that Drilon's term as LP president has already expired and called for the holding of elections to end the leadership vacuum in the country's oldest political party. The ruling came after the poll body invalidated the so-called "rump elections" of LP leaders in March 2006. On November 26, 2007, at Club Filipino,
Greenhills, San Juan, LP National Executive Council officials resolved to appoint Senator
Mar Roxas as president of the
Liberal Party (Philippines).
Corazon Aquino and
Jovito Salonga,
inter alia, signed the resolution. Roxas is to unite the two LP factions, and set the stage for his presidential campaign in the 2010 election. Atienza, however, questioned Roxas' appointment, attacking the composition of Liberal Party's National Executive Council (NECO) and alleged that the
Supreme Court of the Philippines' June 5 resolution ordered the LP leadership's status quo maintenance. In February 2007, Atienza formally and officially announced that his son, the Presidential Adviser on Youth Affairs and Manila's Chair of the Inner-City Development Committee,
Arnold Atienza, would run for mayor of the city on May 14, 2007. Arnold Atienza lost the mayoralty race to Sen. Alfredo Lim, who was also a former mayor.
Environment Secretary Atienza, a staunch supporter of President
Gloria Macapagal Arroyo, was named Environment Secretary on July 18, 2007, replacing
Angelo Reyes, who was moved to the Department of Energy after incumbent
Raphael Lotilla resigned. Atienza's appointment came as a shock to environmental groups, who had dubbed him as the "butcher of Arroceros." As Manila mayor, Atienza in 2003 enraged environmentalists when he ordered the closure of the
Arroceros Forest Park to give way to the building of an education office and a teacher's dormitory, sparking a lawsuit. The Kalikasan People's Network said that Atienza had no moral authority to be at the helm of the DENR because he had "neither had sterling qualifications nor a clean track record of protecting the environment as former Manila Mayor."
2010 mayoralty bid In
2010, Atienza ran for a comeback as Mayor of Manila under
Pwersa ng Masang Pilipino, with
Manila 6th district councilor Bonjay Isip-Garcia as his running mate for vice mayor. However, he lost to incumbent Mayor
Alfredo Lim, who received 59.52% of the votes.
Representative In 2013, Atienza became the representative of Buhay Partylist in the House of Representatives. He opposed the divorce bill and tried to oppose the anti-discrimination bill as well, but withdrew after seeing a massive backlash against him. He also opposes the department of culture bill and the civil union bill. Atienza supports the
Philippine drug war, ironic since it is the complete opposite of his party's advocacies. Other moves he supports are the budget for the
Commission on Human Rights and the re-imposition of the death penalty. He also expressed his intent to campaign for the withdrawal of the
reproductive (RH) law that was passed in 2013, or if not possible, he intends to minimize the funding of the law's programs. Atienza also supported the rejection of environment secretary
Gina Lopez. Atienza is an investor in the mining industry in the Philippines, and has been blocking the national land use bill since his stint as representative.
2022 vice presidential campaign On October 1, 2021, Atienza filed his certificate of candidacy for
Vice President for
2022 Philippine presidential election under
PROMDI together with Senator
Manny Pacquiao for
President. Atienza underwent
knee replacement surgery in February 2022 days after spraining his foot, making him unable to join Pacquiao in his campaign sorties, as well as the vice presidential debates. He lost the race with 270,381 votes, placing 5th behind
Davao City Mayor Sara Duterte.
2025 Congress comeback attempt On October 1, 2024, Atienza, as the first nominee, led the
Buhay Party-List in filing its certificate of nomination and acceptance for the
2025 Philippine House of Representatives elections. However, the party-list failed to secure a seat in the
20th Congress. In Manila, Atienza endorsed the mayoral bid of former Mayor
Isko Moreno, who is running with his daughter
Chi Atienza as the vice mayoralty candidate in
2025. ==Leadership style==