Democratic presidential candidate Bernie Sanders waves to the crowd after arriving Tuesday at a campaign rally at the Big Four Lawn Park in Louisville, Ky.
John Sommers II/Getty Images
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The Vermont senator tells NPR he will stay in until June, despite the likelihood of Hillary Clinton being the Democratic nominee.
Democratic presidential candidate Bernie Sanders waves to the crowd after arriving Tuesday at a campaign rally at the Big Four Lawn Park in Louisville, Ky.
John Sommers II/Getty Images
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