CONCORD, NH - MAY 27: Democratic presidential candidate and U.S. Sen. Bernie Sanders (I-VT) speaks to an overflow crowd through a megaphone after a campaign event at the New England College May 27, 2015 in Concord, New Hampshire. Sanders officially declared his candidacy yesterday and will run as a Democrat in the presidential election and is former Secretary of State Hillary ClintonÕs first challenger for the Democratic nomination. (Photo by Win McNamee/Getty Images)
