Aseefa Bhutto-Zardari might contest her first National Assembly election from Qambar-Shahdadkot.
"She can contest from more than one constituencies but she will surely be contesting from Karachi," Dawn quoted one of the party leaders as saying.
Her brother, Bilawal Bhutto-Zardari and father Asif Ali Zardari had earlier announced that they would go to the polls from Larkana and Nawabshah, respectively.
The Secretary-General of the Pakistan Peoples Party Farhatullah Babar confirmed that the two sisters of PPP co-chairman Zardari would not be in the run for any National Assembly seat this time.
The Pakistan Peoples Party has already decided constituencies of former President Zardari, Bilawal and Aseefa.
Aseefa became eligible to contest the election in February when she celebrated her 25th birthday.
Pakistan will go to the polls on July 25.