Hello Saurabh, The data you sent does have issues - some of the geometry columns are empty. Plus, there are 544 constituencies in the shapefile but the criminal dataset has only 184 data points, and the MP assets dataset has only 443.
I've did the spatial join as you require and uploaded them here - http://sajjad.in/datameet/ Let me know if it looks okay. HTH. Cheers, Sajjad. -- Datameet is a community of Data Science enthusiasts in India. Know more about us by visiting http://datameet.org --- You received this message because you are subscribed to the Google Groups "datameet" group. To unsubscribe from this group and stop receiving emails from it, send an email to datameet+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.