Gallup poll shows U.S. support for same‑sex marriage at 65%

Support for same-sex marriage in the United States has declined from its recent peak, interrupting more than two decades of steady growth in public acceptance, according to a new Gallup survey. The poll, released in early June, found 65 percent of U.S. adults now believe same-sex marriage should be legal, a six-point drop from the record high of 71 percent recorded in 2022 and 2023.

The shift is notable as it suggests a potential plateau or reversal in one of the most dramatic opinion changes in modern American history. Public backing for same-sex marriage had risen from just 27 percent in 1996 to roughly 70 percent in recent years, a trend widely viewed as stable following the Supreme Court’s 2015 decision legalizing it nationwide.

The latest data indicates a broader softening of support for LGBTQ issues. Moral acceptance of gay and lesbian relationships has also dipped to 62 percent, its lowest level since 2016, after peaking at 71 percent in 2022. Acceptance of changing one’s gender has experienced a steeper decline, with only 38 percent now viewing it as morally acceptable, down eight points since 2021.

The decline is largely driven by shifting attitudes among Republicans...