A new NBC News Decision Desk Poll finds that Republican support for President Donald Trump's handling of the Iran war is softening. The share of Republicans who strongly approve of the president and of how he has managed the conflict has fallen noticeably in recent months, according to the survey. Trump's pool of most ardent supporters is shrinking, the poll shows, even as he continues to draw solid backing from the Republican base overall. The survey is the latest in a series of NBC News Decision Desk polls tracking public opinion through the conflict and into the 2026 campaign season.
Strong approval slips
The drop in strong approval matters because intense enthusiasm, not simple approval, drives voter turnout and donations. Pollsters who analyzed the results said the president's hardest-core supporters remain loyal, but the edges of that group are pulling back as the war grinds on. NBC's decision desk noted that the decline in strong Republican approval has been steady since the spring, when the conflict began.
Wide disapproval across the country
Across all voters, the numbers are tougher for the White House. Two-thirds of Americans, 66 percent, disapprove of Trump's actions in the Iran war, while 33 percent approve. The president also receives low marks on his overall job performance in the same survey. The findings echo other recent polls that show a majority of Americans opposed the decision to strike Iran in the first place.
Why the poll matters
The survey arrives at a delicate moment. The administration is pressing a military campaign abroad while managing legal battles at home, and the midterm election cycle is already underway. History suggests that wars without a clear end tend to erode public support over time, and the new numbers indicate that erosion has now reached the president's own party. White House allies argue that opinion could shift if the conflict ends quickly, but the poll offers little sign of that so far.