'ઓપિનિયન પોલ' વિશે તમારો મત શો છે?

https://en.wikipedia.org/wiki/Opinion_poll]

http://www.ncpp.org/?q=node/4

http://www.palgrave.com/br/book/9780230278899

https://link.springer.com/chapter/10.1057/9780230374959_1

https://lirias.kuleuven.be/bitstream/123456789/158747/1/PaperWAPOR_NSo

http://www.thehindu.com/news/national/opinion-polls-ec-caution-to-media/article5919172.ece