Ignore all the polls that have been released or will be released up to today
The only polls that will matter will come after the debate: probably the most anticipated political event of the year and the one which will either make or break either campaign:
One-third of voters say the presidential debates will be very important in helping them decide who to support for president, with slightly more Republicans than Democrats saying so, a new Wall Street Journal/NBC News poll has found.
https://politicalwire.com/2016/09/25/one-third-voters-say-debates-will-help-decide/
The total audience, network executives and political strategists say, could be as high as 100 million viewers Super Bowl territory. That would surpass the 80 million who watched Jimmy Carter and Ronald Reagan in 1980, the record for a presidential debate, and rank among television benchmarks like the finales of MASH and Cheers.
Dan Balz: The first debate, at Hofstra University, should be great theater. Trump, an unguided missile, will be seeking to project a calmer demeanor and a command of the facts, enough at least to reassure voters who doubt his capacity to serve. Clinton, a studious and well-prepared debater whose expertise on many issues is deep, will be looking to avoid the weeds, offer a bigger and more affirmative vision and mostly try to prove that her rival is unfit to occupy the Oval Office.
https://politicalwire.com/2016/09/24/record-numbers-expected-first-debate/