The act paved the way for Sharif to become the PML-N chief after he stepped down as party president following his disqualification by the apex court in July previous year.
Mr Sharif and his supporters have repeatedly denied allegations of corruption, suggesting the three-time prime minister is the victim of a conspiracy driven by Pakistan's powerful military establishment.
Earlier today, Supreme Court ruled that a disqualified politician can not lead a political party, paving the way for the removal of former prime minister Nawaz Sharif from chairing his party, Pakistan Muslim League Nawaz.
The ruling by Chief Justice Mian Saqib Nisar, heading a three-judge penal, was in response to petitions from opposition parties who challenged a constitutional amendment pushed through parliament by Sharif's party previous year, after he resigned as premier over corruption charges.
Liked the story? We're a non-profit. "Such a decision was obvious to come in support of an earlier weak court order which disqualified the most popular prime minister", she said.
The initial response from PMLN members indicates that even if he can not be the head, "Sharif will continue to dominate the party from the sidelines", Askari said.
As a direct result of the Supreme Court ruling, all decisions issued by former prime minister Nawaz Sharif as the party chief, including all the tickets awarded to candidates for the Senate elections, were declared null and void.
"Nawaz Sharif will remain our leader despite these kind of judgments". The bar, however, was removed by the Nation Assembly when it passed the Elections Act 2017.
Elections Act 2017 was pushed through the Upper and Lower houses of the Pakistan's parliament.
Pakistan Tehreek-e-Insaf Chairman Imran Khan, Awami Muslim League chief Sheikh Rashid, MNA Jamshaid Dasti, National Party and the Pakistan Peoples Party (PPP), among others, challenged the law for allowing a disqualified parliamentarian to become a party head. Winning control of the Senate too would allow the PML-N to change the constitution to make Sharif eligible to hold office again when the party contests a national election due later this year.
In his response to the development, Rana Sanaullah said Nawaz Sharif is their leader and no decision could break their commitment to him.
Nawaz Sharif has already served as Pakistan's prime minister twice, once from 1990 to 1993, and from 1997 to 1999.