Social media has become a popular outlet for various eParticipation activities, such as online campaigning by political parties. Much research on this topic is currently being undertaken, and so far research has shown that political parties often have limited success with their efforts. Much is yet unclear as to the results and possible applications of social media use. One contribution to this could be to clearly define the social media IT artefact as a socio-technical object. In this paper, we propose and define an ensemble view on social media use in eParticipation, consisting of a framework for the identification of technological issues, and information infrastructures to address the social issues. Together, these provide us with a comprehensive definition of the social media IT artefact.