Friday, November 21, 2014

About PPP...

A friend gave me this. [not mine after this, although I completely agree]:


Here's some fun numbers.

137 PPP polls in the RCP averages across all SEN/GOV races in 2014, excluding PPP's 2-way polls when it also published a 3-way poll in the same race.

Polls In the Field After September 1:

51 polls. 10 underestimated the Democrat (D-), 41 underestimated the Republican (R-).  So, 80% underestimated the R.
In 13 races won by Ds: 6 D-, 7 R-, average error 1.9 points in the 2-party vote.
In 38 races won by Rs (counting LA-SEN): 4 D-, 34 R-, average error 3.1 points in the 2-party vote.

That's not small - an error of 3 points can mean you had the D up 52-48 and the D lost 51-49.

Polls In the Field May-August:

29 polls. 4 D-, 25 R- 86% underestimated the R.
In 8 races won by Ds: 4 D-, 4 R-, average error 3.4 points in the 2-party vote.
In 21 races won by Rs: 0 D-, 21 R-, average error 4.8 points in the 2-party vote.

Polls In the Field Between 2012 and April 2014:

57 polls. 12 D-, 45 R- 79% underestimated the R.
In 16 races won by Ds: 4 D-, 12 R-, average error 4.7 points in the 2-party vote.
In 21 races won by Rs: 8 D-, 33 R-, average error 5.1 points in the 2-party vote.

Overall, PPP conducted 100 polls of races that Republicans ended up winning.  12 out of 100 fell on the side of underestimating the Democrat.  88 out of 100 fell on the side of underestimating the Republican.  PPP polled NC-SEN seven times and showed Hagan with a lead every time.  It polled FL-GOV eight times and showed two ties and six Crist leads, three of them by double digits.  In five KS-GOV polls and four KS-SEN polls, it had Orman and Davis leading every time.  Its only OH-GOV poll in the averages had FitzGerald winning.

And that's before you look at the races they chose to poll.

-PPP polled McConnell's race 3 times in 2012-13, when a small Mitch lead would be bad news for Mitch.  It polled the race once in August, found him up 5, and didn't poll it again until it was painting the tape the last week of the race, when it had Mitch up 8 (still well under his final margin).

-PPP polled the Maine Governor's race three times in 2013, finding Michaud up twice, but never polled it once in 2014.  It showed two double-digit Martha Coakley leads in 2013, then came back and only polled MA-GOV the last week when Baker was putting it away.

-PPP polled Thad Cochran's race twice, the last time in July 2014 when it had him leading 41-26.

-PPP polled TX-GOV four times but stopped after April.

-Its last poll in WI-GOV was also in April.

-PPP didn't poll the Iowa, Alaska, Arkansas or Louisiana Senate races in October, and didn't have a single poll in the field in any race between October 20-29.


No comments:

Post a Comment

By and large I am going to rely on Twitter to be the 'comments' section here. You can submit comments, but moderation is enabled, and nearly all of the time I am not even going to check the moderation queue (although in some circumstances, I just might).