SMRs and AMRs

Monday, October 13, 2008

"The Bradley Effect" Selective Memory

By V. Lance Tarrance, Jr.
RealClearPolitics

Now that polls indicate Senator Barack Obama is the favorite to win, some analysts predict a racially biased “Bradley Effect” could prevent Obama from winning a majority on November 4th. That is a pernicious canard and is unworthy of 21st century political narratives. I should know. I was there in 1982 at “ground zero” in California when I served George Deukmejian as his general election pollster and as a member of his strategy team when he defeated African-American Democratic California gubernatorial candidate Tom Bradley, not once but twice, in 1982 and again in 1986.

Bradley Effect believers assume that there is an undetectable tendency in the behavior of some white voters who tell pollsters that they are “undecided” when in fact their true preference is to vote against the black candidate. This so-called effect suggests the power or advantage to alter an outcome — a pretty serious charge. This would render poll projections inaccurate (overstating both the number of undecided voters and the African-American candidate’s margin over a white opponent) and create an unaccounted for different outcome. However, it is indeed a “theory in search of data.”

The hype surrounding the Bradley Effect has evolved to where some political pundits believe in 2008 that Obama must win in the national pre-election polls by 6-9 points before he can be assured a victory. That’s absurd. There won’t be a 6-9 point Bradley Effect — there can’t be, since few national polls show a large enough amount of undecided voters and it's in the undecided column where racism supposedly hides.

The other reason I reject the Bradley Effect in 2008 is because there was not a Bradley Effect in the 1982 California Governor’s race, either. Even though Tom Bradley had been slightly ahead in the polls in 1982, due to sampling error, it was statistically too close to call. For example, the daily Tarrance and Associates tracking polls for the Deukmejian campaign showed the following weekly summations (N=1000 each) during the month of October:

(Continued here.)

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