“I was a Republican because I thought that those were the people who best supported markets,” Warren told Politico in 2011. “I think that is not true anymore.”
Warren and Sanders — two liberal favorites — have been polling toward the top of the crowded Democratic presidential primary field.
One national poll released last week by The Economist/YouGov showed Warren coming in at second with 20%, while Sanders was close behind at 16%. Former Vice President Joe Biden topped that poll with 21% support.