No need to do a research on this. its all PML-N dirty politics and nothing else. no political party in pakistan accepted the census of karachi, not even PPP. they vanished almost 5 to 6 million population in new census, so its going to be challenge in supreme court, without proper census in karachi , i dont see any elections in near future.
yesterday the senators from karachi raised the issue in senate assembly, and if they dont act on it, thn supreme court will give the order for new census in karachi.
It was a SC order to conduct local body elections and census in pakistan, becoz Nawaz sharif wasnt interested to do anything. he just wanted to sit on the Throne like MAD KING.