I don't know about other people, but I never answer these polls. It just contributes to my marketing and political dossier. I don't want the world at large co-ordinating my leanings with my name and address. (Of course, I never participate in marketing surveys, either). And, I think that given the weaponization of government agencies such as the Koskinen/Lerner IRS, that's just prudent. I'll get my revenge, I hope, in the voting booth.
HAve’t been polled in 2016. In 2014 was polled on the Gov race in Cali. Brown v Kashkari...
My theory is that when pollsters call Trump supporters who are the pissed Trump supporters like me, for example, and ID themselves as MSM, people hang up on them. There are pollsters I would answer... BUt not many and not anyone from ABC, NBC, CBS, CNN or Fox. Probably would answer Rasmussen or Gravis.