Pakistan's main opposition party says it will boycott the upcoming presidential election to protest the change in the date of the poll without being consulted.
Raza Rabbani, the presidential candidate for the Pakistan People's Party, announced the election boycott Friday.
The Supreme Court revised the date of the country's presidential election Wednesday, moving the poll date to July 30 instead of August 6.
In Pakistan, the president is elected by voting in the Senate, National Assembly and the assemblies of the four provinces.
The August 6 date would have prevented the participation of many lawmakers because it would have coincided with their religious duties during the holy month of Ramadan.
The ruling Pakistan Muslim League - N candidate Mamnoon Hussain is widely expected to win the presidential vote.
President Asif Ali Zardari's term expires in September. He did not seek re-election.