In 2016, Welch voiced her support for Remain during the EU referendum on that issue. Welch is also a vocal advocate for LGBT rights, and regularly waves the rainbow flag at her concerts, particularly during her song "Spectrum (Say My Name)". In 2019, Welch expressed her support for women's rights during concerts in Las Vegas, Nevada, Chicago, Illinois, Raleigh and Columbia, Maryland. She encouraged her audience to donate to the ACLU instead of buying concert merchandise. In 2018, she tweeted her support for the removal of the Eighth Amendment of the Constitution of Ireland. The removal passed and legalised abortion access within the country.