Colm Merrick is a member of the Scottish National Party (SNP) who represents the constituency of Glasgow Anniesland since 2026 as an MSP, succeeding Bill Kidd. He previously contested Eastwood in the 2021 Scottish Parliament election.

Merrick is also a member of East Renfrewshire Council representing the ward of Giffnock and Thornliebank, elected in 2017 and 2022.