In this entry, we underscore the importance of transparency and replicability in Political Communication research. Recognizing failures to replicate findings in the social sciences due to factors such as publication bias, questionable research practices, and limited access to materials, we emphasize the importance of open science practices. Open science, encompassing a range of practices such as data sharing, preregistration, registered reports, and open access, aims to improve the credibility and reliability of our research. We discuss the specific challenges and opportunities within political communication, including privacy concerns and the balance between openness and confidentiality. By adopting open science practices, we can enhance the impact of Political Communication. We conclude by calling for broader adoption and systemic support for open science within our field.