Sanders Is Rising In the Polls. What It Means for Health-Care Stocks.

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Sen. Bernie Sanders and Sen. Elizabeth Warren both favor Medicare for All. Photograph by Joe Raedle via Getty Images

Sen. Bernie Sanders has spent most of the campaign for the Democratic presidential nomination trailing behind former Vice President Joe Biden.

Now, just a few days before Iowa holds the nation’s first nominating contest on Monday, that has changed. Sanders has come in at the top of the field in a flurry of recent polls in early-voting states, amd has seen steady gains in national surveys. On Friday, Sanders tied Biden for first place in the Wall Street Journal/NBC poll.