The Elections Archive (THEA) is an archive of detailed, subnational election results and associated materials. Our motivation is to preserve and consolidate these valuable data in one comprehensive and reliable resource that is ready for analysis and publicly available at no cost. This public good is expected to be of use to a range of audiences for research, education, and policy-making. The datasets are available from the project website. THEA was formerly known as the Constituency-Level Elections Archive (CLEA).