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New publication by Jonathan Polk and Jan Rovny

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Jonathan Polk and Jan Rovny co-authors of new article in Party Politics

Measuring party positions in Europe: The Chapel Hill expert survey trend file, 1999-2010.

Ryan Bakker, Catherine de Vries, Erica Edwards, Liesbet Hooghe, Seth Jolly, Gary Marks, Jonathan Polk, Jan Rovny, Marco Steenbergen and Milada Anna Vachudova

Published online 29 November 2012 in Party Politics: http://ppq.sagepub.com/content/early/2012/11/29/1354068812462931