There have been limited efforts so far to mainstream social media-based citizen-led political deliberations and its integration with traditional government-led e-Participation. Thus, while notion of duality of e-Participation is plausible – the mutual (re-)shaping of the deliberations on traditional e-Participation and social media; significant socio-technical and organizational capabilities must be developed by governments to harness this duality. In this paper, we elaborate on these capabilities relying on the theoretical framework developed in our earlier work. Focusing on the socio-technical aspects, we develop the requirements, design and specify the implementation technologies for realizing the Social Software Infrastructure (SSI) required for harnessing political deliberations on social media platforms. We show how the SSI can be integrated with a traditional e-Participation platform and conclude with the challenges in implementing and sustaining this technical infrastructure in government.