In 2015, Tasmanian Archbishop Julius Porteous distributed a political booklet titled, "Don't mess with Marriage" that advised parents to lobby MPs against same-sex marriage. Croome encouraged parents to submit complaints to the Tasmanian Anti-Discrimination Commissioner, stating “I urge everyone who finds it offensive and inappropriate, including teachers, parents and students, to complain to the Anti-Discrimination Commissioner, Robin Banks”. The ABC "Media Watch" program reported that Croome, along with Christine Forster, had been interviewed 32 times on the subject of same-sex marriage, in the first 12 days of August 2015.