Over the last month, following his formal entry into the Democratic presidential primary contest, former vice president Joe Biden surged more than 10 points in polling conducted by CNN and its partner SSRS. His lead in this poll is now twice that of the second-most popular candidate, Sen. Bernie Sanders (I-Vt.), whose numbers dropped slightly. Biden’s support, in fact, is now larger than that of the next four candidates combined.
Why? In part because he draws relatively uncontested support from more moderate Democrats while other leading Democrats — including Sanders, Sen. Elizabeth Warren (D-Mass.) and South Bend Mayor Pete Buttigieg — are competing more among liberal Democrats. Among liberals, too, though, Biden has a lead. CONT.
Philip Bump, Washington Post
Recent polls: Democratic presidential preference