Replication Data for: Ballot paper design and vote spoiling at Polish local elections of 2014: Establishing a causal link

This Dataset contains the following data: 1) data on Polish local elections (1998, 2002, 2006, 2010 and 2014), including information about invalid votes, retrieved from: http://pkw.gov.pl/352_Wybory_i_referenda (.csv files); 2) the R code used to carry out the analysis (file: invalid_votes_replication.Rmd).