The Parliament of Malaysia passed the Constitution (Amendment) Bill 2019 unanimously on July 16, 2019, to lower the voting age from twenty-one years old to eighteen years old. The voting reform idea emerged in 2017 before it was swiftly adopted in 2019. This study explores the agenda-setting process for this reform to understand how the idea advanced to the decision agenda. The study uses John Kingdon's multiple streams framework to identify the factors and characteristics in problem, policy, and political stream, key individuals, and policy windows that lead to lowering the voting age as agenda. The results show that the framework's attributes are evident but suggest some limitations on the study. The study contributes theoretical insights into Kingdon’s multiple streams framework.