Support for Same-Sex Marriage Is Declining

Support for same-sex marriage in the United States is declining, especially among Republican voters, according to new data.

Gay marriage was legalized nationwide in 2015, after the landmark Supreme Court case Obergefell v. Hodges. While approval for same-sex marriage steadily increased across political affiliations, data from Gallup has shown a decrease over the past two years.

The majority of Americans still approve of it, with 69% saying same-sex marriages should be legal. The peak for national approval of gay marriage was 71%, in 2022. Slightly fewer Americans believe that gay...