After the recent Senate elections, the Bizenjo-led group of independent senators-elect from Balochistan raised the demand that the top office of Senate be given to the province.
He tweets, "Congratulations to Baloch Senator Sadiq Sanjirani for becoming Chairman Senate".
Then Mr Sanjrani came close to the Pakistan Peoples Party leadership and was appointed in-charge of the party's complaint cell where he worked for five years.
The ruling Pakistan Muslim League-Nawaz (PML-N) suffered a major setback today when its candidate for Senate chairmanship was defeated by an independent candidate supported by the opposition parties.
Pakistan's governing party has lost the election of the chairman of the Upper House - the Senate - as the joint opposition candidate convincingly clinched the office, according to official results.
Earlier in the day, 51 newly elected senators took oath in a ceremony held in Islamabad.
Majority of the opposition parties had supported Sanjrani's candidature and announced to vote for him after he was elected as the member of the Senate for the first time on March 3, 2018 in the Senate elections, in which, half of the chamber's members were elected.
Balochistan Chief Minister Abdul Quddus Bizenjo proposed the name of Sanjrani, who also enjoyed the support of Imran Khan-led Pakistan Tehreek-i-Insaf (PTI).More news: Erdoğan slams North Atlantic Treaty Organisation for 'not supporting Turkey's Afrin operation'
To a question about number of parties supporting the PPP, Bilawal did not divulge details, arguing that it would benefit the Pakistan Muslim League-Nawaz (PML-N).
Mandviwalla was contesting against government-backed Usman Khan Kakar from PkMAP and secured 54 votes.
Today, Fata and MQM senators have said that they will also be voting for Sanjrani and Madviwala.
In addition to the PkMAP, the Jamiat Ulema-i-Islam-Fazl (JUI-F), National Party, Awami National Party (ANP) and Jamaat-i-Islami (JI) have all thrown their weight behind the PML-N backed candidates.
Sadiq Sanjrani had also worked with former chief minister Nawab Sanaullah Zehri as his special assistant.
It will be followed by oath by the members-elect under Article 65 of the Constitution and signing of the roll of members.
"It has been proved today some forces are more supreme than the Parliament", he said in his speech in Senate after the election of new chairman and deputy chairman of the house. Bizenjo was accompanied by a delegation of independent senators-elect from Balochistan.
PML-N Central Information Secretary Mushahid Ullah said they have managed to get simple majority in the 104-member House but they were still trying to woo more votes.