A Warning About PPP’s Wisconsin Poll

Published June 4, 2012 4:28pm ET



Over at the Milwaukee Journal Sentinel’s website, Christian Schneider notices something funky about that new PPP poll:

Late Sunday night, Democratic polling firm Public Policy Polling (PPP) released a poll that showed Scott Walker leading Tom Barrett in Tuesday’s recall election by three percentage points.  This led the firm to say the race is “tightening,” as the last poll they conducted showed a five point spread between Walker and Barrett.  The results, as listed in their poll’s toplines:
Tom Barrett …………………………………………….. 47%
Scott Walker …………………………………………… 50%
Undecided………………………………………………. 3%
It was the first poll conducted by PPP since May 15, when they released this head-to-head number:
Tom Barrett……………………………………………….45%
Scott Walker………………………………………………50%
Hari Trivedi………………………………………………….2%
Undecided:………………………………………………….3%
Notice anything different?
In the this week’s final poll, PPP dropped Independent candidate Hari Trivedi as an option.  And it’s not as if PPP just forgot Trivedi was running.

Wow. So, PPP changed its methodology at the end of the polling cycle? That itself is a huge no-no, but then it went on to infer that the race is tightening? My goodness!

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