For the July 25 polls, PSP has fielded candidates from 54 NA seats — out of these, 34 seats are from Sindh, six from Punjab, five from Khyber Pakhtunkhwa, six from Balochistan, two from Fata and one from Islamabad.
A former mayor of Karachi and once blue-eyed boy of MQM supremo Altaf Hussain, Mustafa Kamal announced the formation of PSP in a dramatic press conference following his return to Pakistan after a self-imposed exile that lasted almost three years. His speech in Karachi's posh DHA neighbourhood on that day marked the first time a former member of the party publicly lambasted the MQM as well as Altaf Hussain.
Since the inception of PSP, dozens of MQM leaders and scores of workers have joined the MQM offshoot, including MNAs and MPAs. PSP leaders also claim to have organisational units across the world, including in the UAE and US.
Kamal also invited senior MQM leader Dr Farooq Sattar and other MQM splinter groups to join PSP after the MQM completely dissociated itself from London-based supremo Altaf Hussain over his anti-Pakistan remarks. Sattar declined the offer.
In November 2017, leaders of PSP and MQM-P said they were joining hands and will contest the 2018 elections under "one name, one manifesto, one symbol and one party". The alliance did not last beyond a few hours and later on Kamal claimed it was brokered by the establishment. Subsequently, Sindh Rangers Director General Maj Gen Muhammad Saeed clarified that the military establishment had not supported any particular political party in Karachi and that the armed forces had no part to play in the formation of an alliance nor the subsequent breakup between MQM and PSP.
One of its most prominent protests is an 18-day-long sit-in outside the Karachi Press Club in April 2017, during which the PSP demanded the provision of basic civic facilities for Karachi, including uninterrupted electricity, water and gas supplies. PSP leaders later staged what they called a "million man march" but reporters said the turnout was unimpressive. Kamal was arrested during the demonstration but was released later on.