Reading anything beyond a simple reporting of contextual fact would be wrong on your part. The analysis/reporting I provided of your Quinnipiac example is enough to demonstrate a difference of relevancy amongst polls surrounding an important (surprise) event, such that a blanket dismissal of all the polls "at the same time" because they have "markedly different results" is quite inappropriate for the PA situation (and unuseful to any more-than-just-technical Intraders, if there are any paying attention). The poll reported on April 2 by PPP -- besides having been conducted wholly *after* Casey's key PA endorsement event (unlike Quinnipiac's poll, already ongoing 4 days when the Casey event unexpectedly intervened) -- also covered the timeframe of Obama's speaking appearances around northeastern Pennsylvania through April 1. SUSA, though, ended its polling on March 31, *before* Obama's speaking appearances on April 1 in northeastern PA. SUSA's poll results would not be as "encompassing" of the post-Casey event-effect as PPP's. Quinnipiac's results would simply be a distortion.
When several polls come out at about the same time with markedly different results, it generally isn't prudent to place much confidence in any of them.
The statement doesn't really reflect the situation in PA with the "several polls" in question: The PA polls situation -- Mar 24 (Quinnipiac) thru Apr 1 (PPP), was more complicated than merely 'polls conducted about the same time'. The situation involved several polls, begun before or after
a major unexpected event in time (Mar 28 in Pittsburgh) and concluded more or less before that event's "effect" and finalization day-to-day
in different places across Pennsylvania (March 30 Harrisburg, Mar 31 Lancaster, Apr 1 Wilkes-Barre, Dunmore and Scranton).
SUSA -- probably under contract for pre-planned polling dates with four PA TV stations -- ended its polling Mar 31, a day before Obama's scheduled appearances in Northeastern PA, an area where WNEP reported on the evening of Sunday March 30 that Hillary held a 10+ point lead over Obama. One of the four contracting TV stations, WNEP presumably would have been aware that its pollster, SUSA, would be finished polling on Mar 31, and thus any upcoming poll results from SUSA after the major Casey event wouldn't be reflective of Obama's appearances in Hillary "strongholds" in northeastern PA. In contrast, PPP carried its polling through April 1, during which timeframe Obama appeared in Wilkes-Barre, Dunmore, and Scranton.
SUSA PA contractors:
WCAU-TV Philadelphia,
KDKA-TV Pittsburgh,
WHP-TV Harrisburg, and
WNEP-TV
Scranton/Wilkes-Barre.
Sunday night, March 30 (...two days before Obama's scheduled appearances in NE PA cities and with the WNEP reporter presumably aware its pollster, SUSA, would conclude polling before Obama even got to WNEP territory...yet no forewarning to its viewing audience that any upcoming SUSA poll would not reflect those appearances.)
http://www.wnep.com/Global/story.asp?S=8096255Illinois Senator Barack Obama looked exhausted Sunday night when WNEP Newswatch 16's Josh Brogadir caught up with him in Harrisburg. After a day that included a rally for 22,000 in State College, a trip to the Penn State agriculture barns and a town hall meeting in Harrisburg, the Democrat who leads in pledged delegates spent a few minutes with us.
Obama, the national Democratic presidential frontrunner, is a candidate trailing in the Pennsylvania polls.
Still, he was determined in his outlook in the commonwealth while showing us his lighter, joking, self-deprecating side.
"With three weeks to go before the Pennsylvania primary, Senator Clinton is ahead in the polls about 10 points or so, probably more than that in northeastern Pennsylvania, so how do you close the gap, and how do you win this state?" Brogadir asked.
"Well, we're just going to do what we've been doing for the last three days. We're going to work hard. We're going to make a lot of stops. We're going to answer a lot of questions. I'm going to shake a lot of hands. I'm going to stop by everything from dairy farms to sports bars. I may have to avoid bowling alleys after the mishaps that I had yesterday, but maybe some pool halls, because my pool game's pretty good. But the main thing is just having the chance to talk to people and listen to them, and here in Pennsylvania like the rest of the country, there's a lot of economic hardship and a lot of economic anxiety," Obama responded. ...
Big Day of Campaigning in Scranton/Wilkes-Barre
http://www.wnep.com/Global/story.asp?S=8089134&nav=menu158_2 Tuesday
will be a busy day of campaigning in the Scranton/Wilkes-Barre area.
Both Senator Barack Obama and Senator Hillary Clinton will make campaign stops.
Barack Obama Bus Tour Stops in Wilkes-Barre
http://www.wnep.com/Global/story.asp?S=8100591&nav=menu158_2 April 1
Both Barack Obama and Hillary Clinton rolled into Wilkes-Barre Tuesday. Senator Clinton hosted an afternoon rally at King's College. Senator Obama held a town hall meeting in the morning at Wilkes University, before heading to an event in Dunmore.