Read the full results of the PPP poll, 41% identified as Democratic Party and 32% as Republican Party supporters. Now if what you're saying is true that the vast majority of independents are natural Republican Party voters then Hillary has a pretty big job ahead of her because, as that quote from the fivethirtyeight pundit indicates, Trump's performance lowered the barrier to them voting for him.
Look, I get that it's worrying and uncomfortable but the truth appears to be that enough people think Trump won the debate for it to be an issue.
So polls which have a significant skew on their polling population can be happily accepted as long as they show for Hillary whereas polls where the polling population is unknown can safely be discounted because you know they have a Trump bias
Unbelievable .
I'm sure that the Hillary campaign have done their own polls and are aware of the situation, whatever it may be.