Okay, I just started reading that link, and so far, the two rabbit holes I've gone down have been fairly crazy webs of partisan blogs reporting on the "findings" of other partisan blogs.
Truthfeed pointed out that NBC/WSJ didn’t mention that the poll was created by a Hillary Super PAC.
The sourced article does not prove that. It proves that the polling organization that did the polling received money. Now, as a rational person, I might think that was money required to actually run a poll, since they aren't free, and cost money to run. Zero consideration was given to this, no follow up was done with the polling organization to ask them what this money was for, nor to ask them if they received money from other organizations (from ones supporting Trump, for example).
A partisan blog is very low journalistic standards sourcing its news from another blog with both low journalistic and low investigative standards should not be your source of news. Seriously, how can you put forward a link like this with a straight face? Did you actually look into this at all, or did you just take what was written on random blogs as de facto truth, and completely suspend all disbelief?
It’s also well known that the Monmouth University poll is run by a Hillary Huckster who recently was caught manipulating a poll and then lied about it.
Already off to a good start! Such unbiased reporting, referring to a "Hillary Huckster". This claim, that they only weighted based on party affiliate, is easily proven false. I downloaded the PDF with the poll results in question[1], located the tables references, and ran some numbers. No weighting is immediately apparent by gender, but the gender breakdown is close to the actual makeup of the country/region, so none may have been needed (or it may have been small enough to be undetectable). There is definitely weighting by age and race, and of course past political affiliation. The claims that only political affiliation were weighted for are provably false. Even by the data shown in the blog, if anyone had bothered to actually look, rather than just take what was said at face value.
With all the liberal distortions and dishonesty we decided to have a small team of actuarial and statistics professionals take a look at a couple of the recent polls to get their take on the reliability of these polls.
Good! That sounds like a good way to investigate this. So who are these actuaries and statisticians? They aren't ever identified. See, this is where a real journalist would be called out for sloppy reporting. Are these actuarial and statistician professionals "self-professed", or are they recognized in their fields? Do they even really exist? We have no way to know for sure, beyond "this blog referenced them".
By selecting more Dems the polls are designed to provide a Dem result.
Actually, that's what the weighting is for. You know, the thing this blog recently calling out as unfair? The whole purpose is to account for random sampling error. If the population was split evenly at 50% Democrat and 50% Republican, but your sample showed of the 100 people you asked a question, 45 were Democrat and 55 were Republican, due purely to chance and the fact you are sampling, not asking every person, how do you propose we would adjust for that to account for how we think it would really break down on election day? We weight the Democrats up to 50%, and the Republicans down to 50%. In reality, it's not obviously not 50%, but that's the point of weighting a poll.
Let me put it very simply. If your news sources refer to Clinton as "Crooked Hillary" or alternatively to Trump as "The Donald", or refers to "The Democrats" or "The Republicans" as a singular force that can be corrupt, or make blanket statements like "Let’s face it NOBODY likes Hillary and NOBODY trusts Hillary" or reference blogs as their source that do any of those things, you can't really trust them to give you an honest, impartial view of anything. You may think the MSM is biased, but usually what I hear as evidence of that assertion is that they aren't reporting on "news" such as this, when it's very cleat this isn't "news", by any journalistic standard. The MSM might be somewhat biased, but I think it's clear they are definitively less biased than the source you referenced, which ranges between referencing other sources that are plain wrong and itself making unsubstantiated statements without evidence.
If you want info on polls to trust, it's not too hard to find people willing to look into them with a more balanced approach[2].
1: https://www.monmouth.edu/polling-institute/reports/MonmouthP... PDF at bottom.
2: http://projects.fivethirtyeight.com/pollster-ratings/