Unionization rate by state

Today's Workplace blog has a post (with chart) showing the "unionization" rate on a state by state basis. Nationally the rate in 2011 was 13.3%. Top ten states: New York (26.4%). Alaska (24.3%) Hawaii (24.0 %) Washington (21.2%) Michigan (19.2%), New Jersey (18.8%), California (18.5%), Connecticut (17.6%), Oregon and Rhode Island (17.4%), and Nevada (17.3%). The "unionization" rate statistic is inflated a bit because it includes not only union members, but also those represented under a collective bargaining agreement. Louisiana is 46th (5.9%) and Mississippi is 41st (7.0).