Nate Silver: “Warren’s gains have come mostly at the expense of the rest of the field — from Kamala Harris and Bernie Sanders, in particular — and from other candidates, such as Cory Booker, whose campaigns never really took off in the first place. Relatively little of Warren’s increased support has come from Biden, whose topline numbers have mostly been steady.”
“In fact, Biden’s numbers haven’t declined at all since President Trump’s phone call with Ukraine became the dominant political story.”
