The group commissioning the poll isn't going to affect the result, if the pollster is sound (which PPP is). What it might affect is whether the poll gets released or not. If this poll had been Trump+4, the gun control group might have decided to sit on it. So yes, it's more likely that polls commissioned by advocacy groups are likely to favor their preferred side, but this is because the unfavorable ones are less likely to be released, not because the favorable poll has been manipulated.
Assuming this behavior is true, what can we conclude from it? We probably need to look at the totality of all such polls, from groups on both ends of the spectrum. If there are more such polls being released by one side than the other, then that side has more favorable polls that they can release -- i.e., they're ahead.
Does the advocacy group actually have the ability to decide whether to release the poll?
Anyway, we should stop the ageist attacks on Classic Conservative, as terrible as we find his views.
