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Support for same-sex marriage and broader 17c起草社区IA+ acceptance in the United States has declined slightly after several years of relative stability, according to a new Gallup poll.

The poll found that 65% of US adults say same-sex marriage should be legal, down from 71% in 2022 and 2023. The results indicate a modest shift following a longer-term trend of increasing support that began in the late 1990s.

The data shows differences across political groups. Most of the change is due to dropping acceptance among Republicans. In the new survey, which was conducted in May, only 37% of Republicans say same-sex marriage should be legally valid, while 35% say gay and lesbian relations are 鈥渕orally acceptable鈥�. In contrast, Democratic and independent responses were reported as largely unchanged compared with previous years.

Gallup trend data included in the report shows that support for same-sex marriage increased from 27% in 1996 to around 70% in the early 2020s, before stabilising and then declining slightly in the most recent survey period.

Same-sex marriage has been recognised nationally since a 2015 supreme court ruling. In 2025 there were more than 800,000 married same-sex couples, according to by the Williams Institute at the University of California Los Angeles School of Law.

In recent years, Republican lawmakers in some states have called for the Supreme Court to聽reconsider its landmark Obergefell v. Hodges decision聽in 2015, which guaranteed same-sex marriage nationwide. A number of GOP senators in 2022聽voted against聽the Respect for Marriage Act, which protects same-sex and interracial marriages.

The poll also measured attitudes toward gender identity and transgender-related issues. It found that 鈥渁bout 4 in 10 Americans view changing one鈥檚 gender as morally acceptable,鈥� down from nearly half in 2021, indicating a decrease in reported acceptance compared with earlier polling.

The survey was conducted through telephone interviews with a random sample of 1,001 US adults between May 1 and May 17, 2026. The margin of sampling error for the full sample was plus or minus 4 percentage points.