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He has variously described himself as " right leaning , " " center right , " and " libertarian " , and said he voted for Bob Barr in the 2008 presidential election .
 Bob Barr
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bob Barr