Zardari made the announcement during party's 50th golden jublee celebrations at capital's Parade Ground today.
Only people's vote will decide the future of the country, he told thousands of attendees at the ground.
Zardari's son and PPP chairman Bilawal Bhutto, in his address, said his party had made many sacrifices for laying the foundation of democracy while fighting the dictatorship in the country.
"This is party's third generation, carrying on the legacy for the sake of democracy," said Bilawal.
During the celebrations, a felicitation ceremony was also carried out for those who participated in various movements to establish a democratic rule in Pakistan.
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