2026 polls signal Democratic gains, though some margins missed

Pre-election surveys for the 2026 midterm elections broadly predicted a shift in power to Democrats, a trend confirmed by Election Day results. While specific margins of victory in certain Senate races deviated from forecasted numbers, the overall direction of the polls aligned with the final outcomes.

W. Joseph Campbell, a professor emeritus at American University, noted that the polls met the primary standard of indicating how voters were likely to decide. He described the performance as the most reassuring for pollsters since the 2008 presidential election.

The results reinforced two common political trends. First, midterms typically disadvantage the party holding the presidency. Second, presidential approval ratings often serve as a reliable indicator of national mood. President Donald Trump’s approval hovered at or below 40% in the weeks before the vote, according to RealClearPolitics data.

The U.S. conflict with Iran, initiated by the president, contributed to those low ratings. Unresolved issues and rising fuel prices weighed on consumer sentiment. Polling analyst Nate Silver observed that Trump’s ability to energize low-propensity voters, which usually fails when he is not on the ballot, did not change the outcome this time.

Despite the correct general direction, individual poll results showed significant discrepancies in high-profile contests. In Texas, surveys placed Republican Senate candidate Ken Paxton anywhere from up one point to down seven. He lost by double digits to Democrat James Talarico, a margin no poll predicted.

Maine presented a similar split, with polls showing Republican Senator Susan Collins leading by two points or trailing by nine. Democrat Troy Jackson won by more than six points. In Minnesota, polls for Democrat Peggy Flanagan ranged from a 14-point lead to a 2-point lead. Her final margin was approximately 10 points.

The Texas governor’s race offered another notable deviation. Polls showed Republican Governor Greg Abbott ahead by a few points, but Democrat Gina Hinojosa won by double digits. Campbell cautioned that these gaps highlight the need to look at polling averages rather than single surveys to mitigate the effects of outliers.