This article provides a critical understanding of dynamics behind the roles of the People's Liberation Front (JVP) in post-1977 Sri Lankan politics. Having suffered a severe setback in the early 1970s, the JVP transformed itself into a significant force in electoral politics that eventually brought the United People's Freedom Alliance (UPFA) to power. This article explains the transformation by examining the radical political setting and mapping out the actors and various movements which allowed the JVP to emerge as a dominant player within the hegemonic political mainstream in Sri Lanka. Furthermore, it also highlights the structural changes in JVP politics and its challenges for future consolidation.