AbstractResponding to the need to make democratic governance more anticipatory, during recent decades parliaments have increasingly made efforts to involve elected legislators directly in addressing future risks and envisioning long-term developments. At the level of general democratic-institutional principles, engaging legislators in national-level foresight is expected to enhance the general legitimacy of future-regarding policymaking almost automatically by broadening the scope of democratic actors involved in policy work. However, even the basic mechanisms through which the impact of legislature-based foresight activities could traverse to policymaking remain largely uncharted and unknown. To develop a preliminary framework for detecting and comparing such mechanisms, we draw from the experiences of the most institutionalised and influential legislature-based foresight unit, the Committee for the Future in the Finnish Eduskunta. We extract three general mechanisms through which parliamentary future committees could make a valuable contribution to national-level strategic foresight: (1) they can improve the quality of future-regarding policymaking by broadening and consolidating national foresight “ecosystems”; (2) they can strengthen the transparency and accountability of the foresight work of political executives; and (3) they can enhance the legitimacy of anticipatory governance by connecting broader democratic publics to foresight work through more inclusive participatory processes.