The highly-contested election has been viewed as a litmus test to see how the SC verdict affected those who have elected Nawaz to office thrice in since 1990.
"You took the brunt of the attack against Nawaz Sharif", she said, while hailing people of the constituency.
Ms. Kulsoom is in London where she is undergoing treatment for her throat cancer.
Sharif, who has held office as prime minister on three occasions but never completed a full term, has already been summoned by an anti-corruption court in a corruption case on September 19.
"Does this country want democracy?"
Asked to comment on arrest warrants issued for him by the Election Commission of Pakistan, Khan onece again questioned the ECP's authority to summon him in a contempt of court case and said they (ECP) are not "neutral umpires". And Maryam Nawaz said the people of Lahore will elect her mother and "reject the court's decision" against Sharif.
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"It's very hard for them to take this from us", said Sohail Butt, 48, a PML-N voter in the Mozang area of the city.
Maryam Nawaz tells the BBC her father was punished for standing "for civilian supremacy".
Hours after polling started, activists of Pakistan Tehreek-i-Insaf (PTI) and PML-N nearly came to blows at Cooper Road, chanting slogans against each other.
Polls predict a PML-N victory, but it is not clear whether its margin will increase. Fewer votes for the PML-N would allow political opponents to claim that even on the Sharif family's home turf the corruption allegations are having an effect.
After her husband's incarceration following the military coup by General Pervez Musharraf in 1999, Kulsoom had led the party though she never contested elections. One candidate is backed by a new party that is led by an Islamist firebrand who is subject to a $10 million bounty offered by the United States. "In our area, work only gets done if you go through [the PML-N's] workers".
Speaking to supporters of Tehreek Labaik Ya Rasool Allah at a roadside rally, most used to vote for the PML-N.
Some PML-N circles believe the political environment is not conducive for Sharif's return and hence, he has been advised to stay in London for some time. "Women going around acting like men".
Among the candidates are Jama'at-i-Islami's (JI) Ziaur Rehman Ansari and the newly formed Milli Muslim League's independent candidate, Sheikh Mohammad Yaqoob. But their posters are across the city, many featuring the picture of Hafiz Saeed.