Who administers direct democracy mechanisms at the national level?

Chile, Constitution 1980 (as amended in 2021), accessed 12 September 2022

ARTICLE 94 BIS. An autonomous body with legal personality and patrimony of its own, called Electoral Service will exercise the administration, supervision and control of electoral processes and plebiscites; of the compliance with rules on transparency, limit and control of electoral spending; of the norms on political parties, and the other functions that a constitutional organic law establishes. […]