How can we explain the impact of the Arab uprisings on Islamist movements in the region? Most of the focus has been on the ascent of radical violent groups like ISIS, or the repression of the Muslim Brotherhood in Egypt. But Tunisia’s Ennahda movement presents an alternative trajectory. Here is an Islamist movement which went from decades of underground opposition to become a coalition partner in government. At the same time, Ennahda transformed itself from an Islamist movement into, in its own words, a party of ‘Muslim democrats’. What does this tell us about Islamism as a political project? How has the movement reacted to this transformation? What characterises the new Ennahda today?