Democrats see Biden, Warren as close fits, Sanders more extreme - Los Angeles Times
NBC/WSJ poll: Biden, Warren top 2020 Democratic field
Poll: Elizabeth Warren within striking distance of Joe Biden in Nevada
Poll Shows Warren Better for Biden Ticket Than Harris - The American Prospect
NBC/WSJ poll: Biden, Warren rising, Harris plummets
Joe Biden remains the Democratic favorite among likely voters
Poll: Biden holds significant lead over Warren, Sanders in Nevada; top issue is electing someone who can beat Trump – The Nevada Independent
Suffolk/Globe poll finds Sanders, Warren, Buttigieg, Biden in tight race in N.H. - The Boston Globe
Warren and Biden stop playing nice as she zooms in the polls - POLITICO
Biden, Warren lead Democratic presidential primary race in Mass., poll finds - The Boston Globe
Elizabeth Warren Rises to Tie Joe Biden in Poll of New York Democrats - WSJ
Joe Biden still leads Florida, but Elizabeth Warren gaining fast, FAU poll finds
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
KQED Poll: Harris Slips in California, as Warren, Sanders and Biden Lead the Pack | KQED
Poll: Biden leads Warren by 15 points in California | The Hill
Is Warren Becoming a Stronger 2020 Candidate Than Biden? | Vanity Fair
Saint Anselm poll: Buttigieg surges to 10 percentage point lead over Biden, Warren in NH
Elizabeth Warren's New Role: Key Joe Biden Policy Adviser | WBUR News
For Biden VP, Black Democrats are torn between Harris and Warren
How United Are Democrats? A 96-0 Data Point Offers a Hint - The New York Times
Poll: Biden's lead narrows, Warren rises, Sanders third, Buttigieg up
