  This white paper outlines a long-term scientific vision for the development
of digital-democracy technology. We contend that if digital democracy is to
meet the ambition of enabling a participatory renewal in our societies, then a
comprehensive multi-methods research effort is required that could, over the
years, support its development in a democratically principled, empirically and
computationally informed way. The paper is co-authored by an international and
interdisciplinary team of researchers and arose from the Lorentz Center
Workshop on ``Algorithmic Technology for Democracy'' (Leiden, October 2022).
