ClydeR
05-29-2016, 09:17 PM
Fascinating article with a good chart.
But the election is more than five months away. When should you start to care about polls?
With some caveats, we believe the answer is: not quite yet.
The chart above shows how much the polling average at each point of the election cycle has differed from the final result. Each gray line represents a presidential election since 1980. The bright green line represents the average difference.
At this point – 167 days before the election – a simple polling average has differed from the final result by about nine percentage points. We expect this average to become more meaningful by the week, until the national party conventions temporarily make it less so, as shown in the bump about 100 days before the election. The average difference begins to flatten about two months before the election. The day before the voting, an unadjusted polling average has been about 3.5 points off the final result.
More... (http://www.nytimes.com/interactive/2016/05/25/upshot/when-should-you-start-to-care-about-polls.html)
But the election is more than five months away. When should you start to care about polls?
With some caveats, we believe the answer is: not quite yet.
The chart above shows how much the polling average at each point of the election cycle has differed from the final result. Each gray line represents a presidential election since 1980. The bright green line represents the average difference.
At this point – 167 days before the election – a simple polling average has differed from the final result by about nine percentage points. We expect this average to become more meaningful by the week, until the national party conventions temporarily make it less so, as shown in the bump about 100 days before the election. The average difference begins to flatten about two months before the election. The day before the voting, an unadjusted polling average has been about 3.5 points off the final result.
More... (http://www.nytimes.com/interactive/2016/05/25/upshot/when-should-you-start-to-care-about-polls.html)