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Our estimates imply that partisanship is far greater in recent years than in the past, and that it increased sharply in the early 1990s after remaining low and relatively constant over the preceding century.<\/jats:p>","DOI":"10.3982\/ecta16566","type":"journal-article","created":{"date-parts":[[2019,7,24]],"date-time":"2019-07-24T01:04:27Z","timestamp":1563930267000},"page":"1307-1340","source":"Crossref","is-referenced-by-count":330,"title":["Measuring Group Differences in High\u2010Dimensional Choices: Method and Application to Congressional Speech"],"prefix":"10.3982","volume":"87","author":[{"given":"Matthew","family":"Gentzkow","sequence":"first","affiliation":[{"name":"Department of Economics, Stanford University"},{"name":"NBER"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jesse M.","family":"Shapiro","sequence":"additional","affiliation":[{"name":"Department of Economics, Brown University"},{"name":"NBER"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matt","family":"Taddy","sequence":"additional","affiliation":[{"name":"Amazon"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2359","published-online":{"date-parts":[[2019]]},"reference":[{"issue":"4","key":"ecta200055-bib-0001","doi-asserted-by":"crossref","first-page":"965","DOI":"10.1007\/s00355-012-0716-9","volume":"41","author":"Alcalde-Unzu","year":"2013","journal-title":"Social Choice and Welfare"},{"issue":"1","key":"ecta200055-bib-0002","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1111\/ectj.12039","volume":"18","author":"Allen","year":"2015","journal-title":"Econometrics Journal"},{"key":"ecta200055-bib-0003","unstructured":"Amer, M. 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