Are Opinion Polls as accurate as they once were in America?
In Britain it is generally recognised that opinion polling is not what it once was. At the last two important elections (the General Election of May 2015, and the EU Referendum of June 2016) they have got it horribly wrong.
One of the reasons for this that I've heard given is that telephone culture isn't what it was. There was a time that when a landline phone rang people always answered the call (if they were at home). Modern mobiles as well as landlines give people the opportunity to park calls, and often ignore them; thus distorting results.
Another difference it is said is that modern people do not feel the same compulsion to tell the truth to pollsters as did people of 30 years ago.
I have not seen the same scepticism expressed of opinion polls in the US, and there seems to be more confidence that they have got it right. Is there some reason for this? (It is true that the internet polls in Britain were no nearer being correct than the telephone polls).