Ayanna Pressley defeated 20-year incumbent U.S. Rep. Michael E. Capuano last night in a historic upset victory over the Democratic establishment, slamming President Trump and even her own party’s status quo. “It seems like change is on the way,” Pressley said. “I am humbled to be standing before you tonight, victorious. Ours was truly a people power, grassroots campaign, launched just 195 days ago that dared to do what Massachusetts Democrats aren’t supposed to do.” Pressley, 44, will become the first black congresswoman from Massachusetts. She is not facing a Republican opponent in November. In her victory speech, she attacked...