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Hampel was soon elected as county clerk of Milwaukee County , serving from 1919 to 1920 While serving as clerk , Hampel testified and wrote an affidavit in support of fellow Wisconsin socialist Victor Berger for the Congressman 's House hearings regarding whether he should be seated .
 Hampel, Milwaukee County, Hampel, Victor Berger
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hampel, Milwaukee County, Hampel, Victor Berger