my theory is that Pew is right.. and the changes in the phone polls after the debate, are not because people are changing who they are voting for but are changing because the peer pressure increased again to say they are voting for Hillary instead of Trump because of the massive media dumping on Trump... That is why the online polls show no change..
People's Pundit Daily (an online poll) shifted toward Clinton for three days after the debate.
But, then the trend reversed and Trump is now very slightly ahead.
The changes were all within the "area of uncertainty" -- not the same as "margin of error", but close.
PPD doesn't adjust for party identification. They do adjust according to demographics and geography.
The cross-tabs on demographics and "enthusiasm" are very interesting: