Why do midterm election blue wave-tsunami surveys underestimate the scale of the Republican collapse? British media reveals blind spots

Americamidterm elections Set up a blue wave for the Democratic Party,voting However, as in almost all highly competitive Senate races, he underestimated the strength of the Democratic Party. The British Financial Times reported that pollsters may have overestimated the rate of Trump’s supporters to vote this time, due to bias in underestimating Trump’s support in the past.

The survey does not directly add respondents’ responses, but instead uses weighting to bring the sample closer to the composition of the actual voting population. The difficulty is that no one can be certain before an election who will ultimately vote, and the voting population may not be the same in each election.

In the past few presidential elections, polls have repeatedly underestimated Trump’s strength. Industry experts believe this is partly because his supporters are more reluctant to respond to poll calls than Democrats.

This year, industry operators often weight the results according to respondents’ self-reported voting goals in 2024, hoping to fully engage Trump voters. However, this may underestimate the willingness of this group of people to vote this time, leading to an underestimation and miscalculation of the Democratic Party’s gains.republican party The scale of decline.

The Texas Senate race was expected to be a close race, but the Democrat won by 12 percentage points. A comparison of preliminary results from the Financial Times poll and the Associated Press also found that the Democratic margin of victory in Georgia and North Carolina was eight percentage points larger than poll estimates.

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