Gallup polling data reveals Democrats now hold a 10-percentage-point advantage over Republicans heading into the 2026 midterm elections. The shift represents the party's largest lead since 2008 and signals backlash against Republicans ahead of the vote. Democrats' advantage has grown as President Trump's approval rating has remained below 40 percent for months.

The findings show Democrats as competitive across key Senate races in states that previously voted heavily for Mr. Trump. However, party identification shifts do not guarantee votes, as independents who lean toward a party tend to be less politically engaged and less likely to vote. Gallup senior editor Jeffrey Jones noted the trend mirrors patterns seen during the George W.

Bush administration, when unpopularity preceded big Democratic victories in 2006 and 2008. This quarter's Democratic share is similar to the final quarter of the 2018 midterm cycle, when the party gained more than 40 House seats. Data from Pew Research Center indicates this growth is largely driven by groups that had previously shifted toward Donald Trump, including Hispanic voters, young men, and young women.

In 2024, young voters had a one-percentage-point Republican lean, but this year the Democratic advantage among the same group has grown to 16 percentage points. Among Hispanic voters, the Democratic edge has increased by nine percentage points over the same period.