U.S. Democrats Secure Largest Party Advantage Since 2015 in Gallup’s Latest Data

Democrats have now secured a 10-percentage-point lead over Republicans in combined party identification and leaning heading into November’s midterm elections, according to Gallup data. This marks a sharp reversal from the Republican Party’s previous edge following President Donald Trump’s return to the White House.

Gallup’s quarterly averages show that 49% of U.S. adults identified as Democrats or independents who lean toward the Democratic Party in each of the first two quarters of 2026, compared with 39% who identified as Republicans or leaned Republican.

This gap represents the largest Democratic advantage in Gallup’s publicly displayed quarterly trend, which extends back to 2015. The shift is a significant reversal from late 2024, when Republicans held a 47%-43% edge in the fourth quarter of that year. In early 2025, the parties were tied at 45%, before Democrats gained ground through the second half of the year—reaching 46%-43% in Q2, 48%-41% in Q3, and 48%-40% in Q4.

Gallup’s annual figures further indicate that Republicans held a narrow 46%-45% advantage during 2024 before Democrats surged to a 47%-42% lead in 2025.

However, the latest numbers do not necessarily reflect growing enthusiasm for the Democratic Party. Gallup reported last year that this shift has primarily occurred among independents who lean toward a party rather than those who identify as Democrats or Republicans outright. At that time, the Democratic Party’s favorable rating stood at 34%, the lowest Gallup had recorded since its trend began in 1992, compared with 38% for Republicans.

Gallup also noted that a record 45% of Americans identified as independents in 2025, while just 27% each identified as Democrats or Republicans. Among independents, 20% leaned Democratic and 15% leaned Republican.

The polling organization has emphasized that such shifts often occur against the party controlling Washington and do not necessarily signal a warming toward the opposition party. Gallup observed similar patterns during the early years of the Clinton, Obama, first Trump, and Biden administrations.

Historical comparisons require caution as well. While Democrats’ largest annual advantage in combined identification and leaning was 12 percentage points in 2008, Gallup recorded an even larger quarterly gap of 13 points in the first quarter of 2009—when Democrats led 51.7% to 38.7%.

Gallup’s quarterly figures are based on telephone surveys of at least 3,000 U.S. adults and carry a margin of error of plus or minus 2 percentage points.