GambleAware has requested a brief paper outlining evidence for gambling and gambling-related activity (such as various forms of advertising) being subject to a ‘tipping point’ when public opinion causes policy makers to introduce, modify, or ban gambling-related regulation and/or gambling-related activity (such as various forms of advertising). This paper will explore the processes that may be instrumental in fostering policy makers to introduce or modify gambling-related regulations in response to public pressure for reform. The intent is not to review the validity of claims made by the public, academics, lobbyists, or advocacy groups but rather to describe factors that trigger regulatory changes in response to demands for action.