With a populist message that promises to rein in corporate excess, Ms. Warren has been facing more hostility from the finance industry than any other candidate.
Ms. Warren garnered 22 percent in a New York Times/Siena College poll, to 19 percent for Bernie Sanders. Pete Buttigieg has surged, while Mr. Biden’s travails have put the race in flux.
Ms. Warren would impose huge tax increases on businesses and billionaires to provide free health coverage for all Americans, but she says she would not raise taxes on the middle class.