This image is a derivative work of the following images: File:Pt_plelection_pr_2006.PNG licensed with Cc-by-sa-3.0-migrated-with-disclaimers, GFDL-en...
extracted from http://en.wikipedia.org/wiki/Image:Pt_plelection_pr_2006.PNG Derivative works of this file: Pt plelection pr 2011.PNG English...