"No Ahmadi will vote on May 11 to register his or her protest on the discrimination against Ahmadis," said Saleemuddin, the spokesman for the Jamaat Ahmadiya Pakistan.
According to election rules, the basic requirement to be a voter is Pakistani citizenship, and not the religious or ideological beliefs a citizen holds, he said in a statement.
"The voter registration form that the Election Commission of Pakistan has issued has a special entry for religion. In order to register as a voter, Ahmadis have to disassociate from the Holy Prophet, which no Ahmadi could ever imagine," Saleemuddin said.
In the wake of this directive, Hindus, Christians, Sikhs, Parsis, Muslims and people of other religions would be on one list while there would be a separate list for Ahmadis.
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"It is also against the conventions on human rights that the state of Pakistan has signed. This is an intentional attempt to deprive Ahmadis, who are law-abiding citizens of Pakistan, from exercising their fundamental rights and to separate them from the national discourse," he said.
Over 150,000 Ahmadi voters are registered in Pakistan.
Pakistan's Ahmadis are a controversial Islamic sect who consider themselves Muslim but were declared non-Muslims through a constitutional amendment in 1974.
Some 1.5 million Ahmadis live across the country.