Trump approval sinks amid unpopular Iran conflict and darkening G.O.P. midterm signals

U.S. national opinion surveys completed in late April 2026 show President Donald Trump’s overall job approval in the mid-thirties—the weakest readings of his second term in the surveys reviewed for this story. The same window of fieldwork ties those ratings to majority disapproval of American military action against Iran and to economic strain at the gasoline pump.

Polls are not forecasts. They are contemporaneous measures of what registered when interviewers asked forced-choice questions. Six months remain before the 2026 midterms, and House control still depends on district-level margins, turnout, and money. The value of these releases is comparative: they give party operatives and general readers a shared set of magnitudes for approval, war attitudes, and the generic ballot heading into summer.

Two national surveys, two field windows

The rows below pair headline figures from (1) Pew Research Center’s American Trends Panel, April 20–26, 2026, among 5,103 U.S. adults, and (2) the Marist Institute’s national survey, April 27–30, 2026, among 1,322 U.S. adults with a reported margin of error of plus or minus 3.1 percentage points.

Wording and mode differ, so the columns are a side-by-side read—not a blended average.

Marist’s Iran approval figure moved three points from March to April; with a 3.1-point margin, treat that move as a statistical blur unless later waves confirm a downward slope.

What shifted inside Trump’s personal ratings (Pew wave)

Beyond the top-line approval number, Pew’s published tables show erosion on trait items measured in the same wave. Thirty-eight percent said “keeps his promises” described Trump very or fairly well, down from 43% the previous August and 51% just after his November 2024 reelection. Confidence that he would “use military force wisely” stood at 38%, down from 46% the prior summer.

Partisan patterns still cushion the president among Republicans, but not at January highs. Sixty-eight percent of Republicans and Republican leaners approved his job performance, down from 73% in January. Among adults who said they voted for him in 2024, 78% approved—down from 83% in January and 95% in the opening phase of the term.

Iran, gasoline, and the midterm mood (Marist wave)

The Marist survey adds items on pocketbooks and turnout intention that Pew’s topline summary did not duplicate in the same form. In the public tables released with that wave, 51% strongly disapproved of Trump’s job performance overall, 35% approved of his economic handling, and 62% said his decisions had weakened the United States on the world stage.

On energy prices, 81% said current gasoline prices strained household budgets, and 63% assigned Trump responsibility for recent increases. The same reporting cycle quoted a national average retail gasoline price near $4.48 for early May alongside those consumer responses.

On enthusiasm, 61% of Democrats called themselves “very enthusiastic” about voting, against 53% of Republicans. Among self-identified independents, “very enthusiastic” interest ran cooler than among committed partisans, which is one reason strategists treat spring ballot tests as soft.

Why a national topline is not a seat map

Congressional majorities are won in districts and states where redistricting has shrunk the competitive playing field compared with a generation ago. Midterm electorates also skew older and smaller than presidential-year ballots.

A ten-point generic-ballot lead for Democrats in one April national survey signals fundraising energy and message opportunity for the party’s committees; it does not, by itself, predict how many seats change hands.

For Republican incumbents, the policy bundle under these numbers is plain: majority skepticism of the Iran operation on headline questions, gasoline prices feeding economic disapproval, and softening approval inside slices of Trump’s 2024 coalition even while Republican identifiers remain net-positive on the president in the same waves.

The next hinge points that could move these readings are also concrete: quarterly campaign filings, late primary and runoff results in competitive states, summer employment and inflation releases, and any sustained change in oil markets tied to Strait of Hormuz risk that retrains how voters weight foreign policy against prices.