democrat

President Barack Obama, accompanied by Democratic Massachusetts Senate candidate, Rep. Ed Markey, right, talk with patrons at Charlie's Sandwich Shoppe in Boston, Wednesday, June 12, 2013. Obama traveled to Boston to campaign for Markey in his campaign.

Evan Vucci/AP

President Barack Obama, accompanied by Democratic Massachusetts Senate candidate, Rep. Ed Markey, right, talk with patrons at Charlie’s Sandwich Shoppe in Boston on Wednesday. Obama traveled to Boston to campaign for Markey in his campaign.