UPND Leader Hakainde Hichilema says Zambians have been calling for inclusion of the 50-plus one percent vote for the winning presidential candidate, a coalition government clause and an independent electoral commission.
He says Zambians have also been agitating for a proportional representation system of government to be included in the constitution.
The UPND leader says Zambians also want social and economic rights such the right to education, health, employment, housing and water to be included in the constitution.
Mr. Hichilema says if these progressive expectations of the Zambian people are included in the new constitution, then the UPND will vote for the new constitution.
He says the UPND will not vote against a constitution if it is manipulated and does not meet the expectations of the Zambian people.
Mr. Hichilema was speaking at a media briefing held in Lusaka on Thursday.
Meanwhile Mr. Hichilema says it is unfortunate that some sections of the media want to dent his image when he constructively criticizes the PF government.
He says the UPND will support good PF government policies and programs, and that being in the opposition is not meant to bring down the government of the day, but to offer checks and balances.