The objective of this competition is to create the most accurate prediction for Japan’s Upper House Election scheduled in July 2019. Teams may create their models using any publicly available data to predict the vote shares for the PR tier and the election outcome for candidates in the district tier of the election. The winners will be determined by the accuracy of the predictions and the evaluation of the prediction model by a panel of judges. Forecasts must be submitted before the polling day. Teams are not allowed to publicly disclose their election forecasts until the election is over.


Teams may consist of undergraduate or graduate students from any school of Waseda University and students from Waseda University Senior High School and Honjo Senior High School. Teams that include research associates and post-doctoral researchers are judged separately, and they may not receive certain prizes, including the Grand Prize. Members of faculty may also enter the competition but are not eligible to win any prizes. Each team should contain at least 2 members and no more than 4 members.


  • June 26, 2019: deadline for team entry
  • July 4, 2019: Election officially called
  • 23:59 (JST) July 20, 2019: deadline for file submission
  • July 21, 2019: Election Day
  • July 27, 2019: Presentations and award ceremony; reception


Organizers and Sponsors

Main organizers: Center for Data Science; Faculty of Political Science and Economics, Waseda University
Co-organizers: Waseda Society of Political Science and Economics; Center for Positive/Empirical Analysis of Political Economy, Top Global University Project; Waseda Institute of Political Economy (WINPEC); Waseda Institute of Social Media Data (WISDOM)
Supporter: Waseda University D-DATa program; EY Advisory & Consulting Co., Ltd.


Center for Data Science, cds-pse-compe@list.waseda.jp