Talking to a private news channel, he said Maryam Nawaz proved herself an asset of the party as evident from the issued-based election campaign run by her.
She was an active PML-N worker and would play an important political role in future, he added.
Kirmani rejected the allegation of using government resources during the election campaign of Begum Kulsoom Nawaz and if anyone had an evidence in that regard, he should present the same before court.
The senator said the PML-N had always implemented the code of conduct while the Pakistan Tehreek-i-Insaf chief Imran Khan was disobeying the orders of Election Commission of Pakistan (ECP) and thus had got issued his arrest warrants by the ECP.