The parliamentary elections of May 2002 in Burkina Faso saw the ruling party loose its exclusionary grip on power. For the first time since the restoration of democracy in 1991, the parliamentary opposition now represents a sizeable group. While it retains the majority, the ruling party has to share legislative power with the opposition. These elections marginally alter the structure of power in a deeply presidential system of government. Several institutional and electoral reforms have played a critical role in strengthening the mechanisms of ‘vertical accountability’ and representative democracy. By assessing recent electoral reforms in Burkina Faso, the article underlines the importance of the electoral system in multiparty elections and thus contributes to our understanding of the effects of changes in electoral rules on the distribution of political outcomes. In particular, it underscores the contribution that institutional engineering and electoral reform can make to further democratisation in a semi-authoritarian context. While many challenges to democratic governance and the rule of law remain, the new political landscape holds the promise of changes in the style of government and the emergence of more consensual modes of governance.