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Tom Bradley effect? Don't know if this is what happened but here it is...
From wikipedia.org
The term Bradley effect or Wilder effect refers to a phenomenon which has led to inaccurate voter opinion polls in some American political campaigns between a white candidate and a non-white candidate.
Specifically, there have been instances in which statistically significant numbers of white voters tell pollsters in advance of an election that they are either genuinely undecided, or likely to vote for the non-white candidate, but those voters exhibit a different behavior when actually casting their ballots.
White voters who said that they were undecided break in statistically large numbers toward the white candidate, and many of the white voters who said that they were likely to vote for the non-white candidate ultimately cast their ballot for the white candidate. This reluctance to give accurate polling answers has sometimes extended to post-election exit polls as well.
Researchers who have studied the issue theorize that some white voters give inaccurate responses to polling questions because of a fear that they might appear to others to be racially prejudiced. Some research has suggested that the race of the pollster conducting the interview may factor into that concern. At least one prominent researcher has suggested that with regard to pre-election polls, the discrepancy can be traced in part by the polls' failure to account for general conservative political leanings among late-deciding voters.
Origin
The original term Bradley effect derives its name from a 1982 campaign involving Tom Bradley, the long-time mayor of Los Angeles, California. Bradley, who was black, ran as the Democratic party's candidate for Governor of California against Republican candidate George Deukmejian, who was white. The polls leading into the day of the election consistently showed Bradley with a lead.[4] However, Bradley narrowly lost the race. Post-election research indicated that a smaller percentage of white voters actually voted for Bradley than that which had said they planned to vote for him, and that voters who had been classified as "undecided" had gone to Deukmejian in statistically anomalous numbers.[2]
One month prior to the election, Bill Roberts, Deukmejian's campaign manager at that time, had predicted this behavior. He told reporters that he expected that Deukmejian could advance approximately five percentage points from what his poll numbers indicated, due to white voters giving inaccurate polling responses in order to conceal a racial prejudice. Roberts's comments were disavowed by Deukmejian, and the controversy that surrounded them ultimately led to Roberts's resignation.
Similar voter behavior was noted in the 1989 race for Governor of Virginia between black Democratic candidate L. Douglas Wilder and white Republican candidate Marshall Coleman. In that race, Wilder prevailed, but by less than half of one percent, despite pre-election poll numbers that showed an average lead for him of nearly nine percent. Again, the discrepancy was blamed on white voters who had told pollsters that they backed Wilder, but who did not actually vote for him. As a result of this race, some re-christened the "Bradley effect" as the "Wilder effect". Both terms are still used, each referring to the same dynamic, and less commonly, the term "Dinkins effect" is also used,[3] in reference to 1989 election of David Dinkins as Mayor of New York City over Rudy Giuliani
From wikipedia.org
The term Bradley effect or Wilder effect refers to a phenomenon which has led to inaccurate voter opinion polls in some American political campaigns between a white candidate and a non-white candidate.
Specifically, there have been instances in which statistically significant numbers of white voters tell pollsters in advance of an election that they are either genuinely undecided, or likely to vote for the non-white candidate, but those voters exhibit a different behavior when actually casting their ballots.
White voters who said that they were undecided break in statistically large numbers toward the white candidate, and many of the white voters who said that they were likely to vote for the non-white candidate ultimately cast their ballot for the white candidate. This reluctance to give accurate polling answers has sometimes extended to post-election exit polls as well.
Researchers who have studied the issue theorize that some white voters give inaccurate responses to polling questions because of a fear that they might appear to others to be racially prejudiced. Some research has suggested that the race of the pollster conducting the interview may factor into that concern. At least one prominent researcher has suggested that with regard to pre-election polls, the discrepancy can be traced in part by the polls' failure to account for general conservative political leanings among late-deciding voters.
Origin
The original term Bradley effect derives its name from a 1982 campaign involving Tom Bradley, the long-time mayor of Los Angeles, California. Bradley, who was black, ran as the Democratic party's candidate for Governor of California against Republican candidate George Deukmejian, who was white. The polls leading into the day of the election consistently showed Bradley with a lead.[4] However, Bradley narrowly lost the race. Post-election research indicated that a smaller percentage of white voters actually voted for Bradley than that which had said they planned to vote for him, and that voters who had been classified as "undecided" had gone to Deukmejian in statistically anomalous numbers.[2]
One month prior to the election, Bill Roberts, Deukmejian's campaign manager at that time, had predicted this behavior. He told reporters that he expected that Deukmejian could advance approximately five percentage points from what his poll numbers indicated, due to white voters giving inaccurate polling responses in order to conceal a racial prejudice. Roberts's comments were disavowed by Deukmejian, and the controversy that surrounded them ultimately led to Roberts's resignation.
Similar voter behavior was noted in the 1989 race for Governor of Virginia between black Democratic candidate L. Douglas Wilder and white Republican candidate Marshall Coleman. In that race, Wilder prevailed, but by less than half of one percent, despite pre-election poll numbers that showed an average lead for him of nearly nine percent. Again, the discrepancy was blamed on white voters who had told pollsters that they backed Wilder, but who did not actually vote for him. As a result of this race, some re-christened the "Bradley effect" as the "Wilder effect". Both terms are still used, each referring to the same dynamic, and less commonly, the term "Dinkins effect" is also used,[3] in reference to 1989 election of David Dinkins as Mayor of New York City over Rudy Giuliani
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