Progressives, including Sanders, see primaries as testing ground

 
Sen. Bernie Sanders, I-Vt., speaks about his bill to bolster labor unions. Photo by Elizabeth Hewitt/VTDigger
WASHINGTON — As Democratic candidates face off in primaries around the country this year, a difference in approach is taking shape.Get all of VTDigger's political news.You'll never miss a political story with our weekly headlines in your inbox.Daily
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