Reuters The Des Moines Register, Iowa's largest and most influential newspaper, unveiled its endorsement of Sen. Elizabeth Warren ahead of the state's caucus on February 3. "She is a thinker, a policy wonk and a hard worker," the paper's editorial board wrote. "At this moment, when the very fabric of American life is at stake, Elizabeth Warren is the president this nation needs." The Register said that its five-person editorial board interviewed nine current Democratic candidates for consideration to receive the paper's endorsement for the caucuses.