Midterm Results: Polls Underestimated Democratic Gains
Democratic pollsters explain why new voters and survey biases caused projections to miss the scale of last night's electoral shift.
By Sanjay Caldwell ·
Pollsters underestimated the scale of the Democratic victory in Tuesday's midterm elections.
Democrats flipped at least seven Senate seats, including in red states such as South Carolina, Kansas, and Texas. Races that analysts predicted would be close finished with decisive margins. Counties that supported Donald Trump in the 2024 presidential election recorded double-digit swings toward Democratic candidates this year.
Anna Greenberg, a Democratic pollster with GQR Insights & Action, described the projections as directionally correct but numerically short. She stated that the industry anticipated a blue wave but failed to predict a tsunami. Greenberg identified two primary reasons for the discrepancy. First, survey respondents tend to skew Democratic, leading pollsters to adjust their models conservatively to avoid overestimating Democratic support. Second, a large number of new voters participated in the election, making it difficult for pollsters to identify and model this demographic accurately.
Greenberg noted that this pattern of unexpected new voter turnout has occurred in previous cycles, including 2016, 2020, and 2024. Those elections saw large numbers of new voters supporting Donald Trump, which also defied prior expectations. In the 2026 midterms, the movement of young men was a standout trend. Greenberg observed that the male-focused style of the 2024 Republican campaign had little effect on young male voters in 2026, who shifted heavily toward the Democratic Party.
The size of the 2026 midterm turnout was comparable to the 2018 cycle. However, the political impact of the results was more similar to the 1976 election. Greenberg suggested the results may represent a realigning election, where some voters permanently join the Democratic camp. She argued that the wave was a repudiation of the status quo that defied typical midterm patterns, resembling a presidential election in its widespread nature.
Pollsters are currently evaluating the quality of public polling data from this cycle. Greenberg said many in the industry felt aggrieved by previous mediocre and deceptive public polls. She distinguished between campaign polling, which she said remained accurate, and cheap online public polls used for news coverage. She stated that the latter were the primary source of error in recent election cycles.
Greenberg questioned whether the 2026 results constitute a profound political realignment or a reaction to specific leadership. She noted that realigning elections usually follow an exogenous event, such as the Great Depression. While Donald Trump has had a major impact on American politics over the last ten years, Greenberg said it remains uncertain if his influence constitutes the required shock to permanently shift coalitions. She stated that analysts typically identify realigning elections only after a significant amount of time has passed.
