In exploring the first two decades of evolution of political programmes applied for the electoral processes in Slovenia, a young European multiparty parliamentary democracy with a proportional electoral system and multiparty government coalitions, the article contributes to a rich tradition of studying the programmes of political parties as relevant narrators of the development of democratic systems and suggests an answer to ‘why do parties write manifestos?’ The main findings include the distinct issue emphasis of parliamentary and non-parliamentary parties’ manifestos and convergence in issue emphasis over time among parliamentary parties who go on to form coalition governments. Regarding the ‘why’, these and other findings indicate that the manifestos considered here are intended more for post-election purposes – in particular, for the formation of alliances and negotiating and running a coalition government – than for attracting voters in the pre-election period. Party programmes are seen more as self-intended tools for political struggle than as promoters or control mechanisms for the further development of the democratic political system.