The key point from the latest Quinnipiac University Poll (full pdf below) is not so much the result of a statistical neck-and-neck race, but rather how the release proves the prior media polls are transparently biased and constructed to benefit Hillary Clinton.

As we have shared previously, media polls are useless in this election for genuine comparative purposes.  There has not been a single Trump / Clinton media poll in the past month that has not been (transparently) an agenda poll.
The Quinnipiac poll methodology (available here) shows it was conducted from  June 21 to June 27,  and used 1,610 registered voters.  Quinnipiac puts out a fully detailed methodology and accepts the MOE (margin of error) is weighted to favor Hillary Clinton due to the increasing reliance on cell phone contacts.

All of that said, there are just too many flawed assumptions in current polling, including the non media polling, due to their reliance on historical results that do not consider the seismic shift empirically noted in the primary race of 2016.

[Q-PAC] This survey uses statistical weighting procedures to account for deviations in the survey sample from known population characteristics, which helps correct for differential survey participation and random variation in samples. The overall adult sample is weighted to recent Census or American Community Survey data using a sample balancing procedure to match the demographic makeup of the population by region, gender, age, education and race. Margins of sampling error for this survey are not adjusted for design effect. (link)

Here’s the Full Poll Data:

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