Martin-Quinn scores for justices, 1937-2018. The r package ggplot2 code is very slightly modified version of https://rud.is/b/2016/06/28/making-time-rivers-in-r/ by https://twitter.com/hrbrmstr data from https://mqscores.lsa.umich.edu/measures.php This made the reddit front page in a slightl different version https://www.reddit.com/r/dataisbeautiful/comments/dw79y2/ideological_leanings_of_current_united