You can't say this though, without also saying that in reality, only 1/3 feel strongly about leaving. 2/3 of the population did not vote to leave. It's not rea

You can't say this though, without also saying that in reality, only 1/3 feel strongly about leaving. 2/3 of the population did not vote to leave. It's not really relevant to make a comparison with the total population, and when 70% of the population polled, it is probably more than representative of the full picture anyway. If it's distributed randomly across the country, the remaining 30% would have voted in the same manner.