Bhutto became a member of the
National Assembly at the age of 32 years on 5 March 1965. When he and his cousin
Zulfikar Ali Bhutto announced a new political party,
Pakistan Peoples Party (PPP) on 30 March 1967, he also became the founding member and principal executive committee member of the party. He and his cousin Zulfikar Ali Bhutto fought the election of 17 March 1970 against
Muhammad Ayub Khuhro and
Qazi Fazlullah Ubaidullah. He earned a victory against Qazi Fazlullah. His cousin,
Zulfikar Ali Bhutto, became the first democratically elected
Prime Minister of Pakistan and Mumtaz Ali Bhutto became
Governor of Sindh on 24 December 1971, then
Chief Minister of Sindh Province on 1 May 1972. His cousin always used to call him a "talented cousin". Citing differences with
Benazir Bhutto, Bhutto split from
Pakistan Peoples Party and created his own party,
Sindh National Front (SNF) in 1989. In May 2012, prior to the
2013 Pakistani general election, he announced his party's alliance with the
Pakistan Muslim League (N) (PML-N). In August 2016, Bhutto quit the PML-N and revived the Sindh National Front. In November 2017, prior to the
2018 Pakistani general election, he merged SNF with the
Pakistan Tehreek-e-Insaf.
Chief Ministership As a Chief Minister, he announced
Sindhi language as the official language of the Province.
Sindhi Language Bill, 1972 was introduced by the
Chief Minister Mumtaz Bhutto on 3 July 1972, in the
Sindh Assembly, Pakistan. The
1972 Language violence in Sindh occurred starting on 7 July 1972, when the
Sindh Assembly passed
The Sind Teaching, Promotion and Use of Sindhi Language Bill, 1972 which established
Sindhi language as the sole official language of the province resulting in language violence in
Sindh. Due to the clashes,
Prime Minister Zulfikar Ali Bhutto, compromised and announced that
Urdu and
Sindhi will both be official languages of Sindh. The making of Sindhi as an equal language to Urdu for official purposes frustrated the Urdu-speaking people as they did not speak the
Sindhi language. On 7 March 1977 he won a
National Assembly seat and became a Federal Minister. In the year of 1977, his cousin nominated him as president of 'PPP-Sindh'. He was arrested during the struggle against the arrest of his cousin and then exiled by General
Zia's government. On 31 March 1985 he announced a new political Alliance named "
Sindhi–Baloch–Pashtun Front" at
London to propagate ethnic nationalism in Pakistan. He also announced support for a new constitutional framework for Pakistan as a weak federation. He became the convenor of the alliance for Pakistan, returned to Pakistan, and once again was arrested by the military government of Zia. On 31 March 1989, he called the workers' convention at Hyderabad Sindh and announced a new political party named '
Sindh National Front'. He was elected to a seat in the provincial assembly from Larkana on 6 October 1993. On 6 November 1996, he became the caretaker
Chief Minister of Sindh. == Political views ==