Anyway,
PPP will post their results for the general election this week, so if indeed the race has tightened, PPP will be a good indicator!
One of the problems with Emerson is not necessarily just their methodology, but the fact that this is their first poll of these three states, so it doesn't really give us any trend lines to compare against.
Contrast this with Marist, "Q", Marist and PPP that have conducted multiple polls of Ohio and PA over the past few months.
So yes, a new PPP poll of PA will give us an indicator, not just in terms of topline numbers but also any trending that could indicate a tightening of the statewide race.