Wednesday, June 06, 2012

The Problem with Exit Polling

The media thought the Walker Recall election was going to be extremely close, based on their Exit Polls.  Historically, Democrats have been much more enthusiastic than Republicans about talking to the pollsters after voting, so exit polls almost always overstate the number of votes for the Democrat.

In Wisconsin last night, the mainstream media were pumped.  Until the actual results flowed in from around the state showing a pretty dominant victory for Governor Walker.

So today they're touting a 7-point or higher differential favoring Obama over Romney in November.  Only problem is that Walker's margin of victory was pretty close to 7 percent.  It's reasonable to conclude from the result that the Obama lead is nonexistent or at least impossible to call accurately based on those exit polls.

Watching returns early, when Walker was ahead by 20+ percentage points, I hoped his margin would stay that high or continue to widen.  But apparently the larger cities take longer to report their results, so their results came in late and caused the margin to narrow to about 7 percent.

I find the phenomenon rather strange that the larger the city, the more liberal its residents.  It would be very interesting to find out what factors make city dwellers so much more left-wing than farmers and small town folks.

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