Biden, Sanders Are Running Neck and Neck in Nationwide Poll - Bloomberg
Sanders, Biden are neck-and-neck in new NBC/WSJ national poll
UMass Amherst/WCVB Poll: African American voters seeking candidate who can beat Trump
New CNN poll puts Biden in the lead; Sanders and Warren behind by 10+ points - YouTube
Bernie Sanders is now tied with Joe Biden Reuters poll
Texas primary: Bernie Sanders, Joe Biden tied, poll says | kvue.com
South Carolina primary: Joe Biden leads Bernie Sanders in NBC-Marist poll
UT/TT Poll: Sanders and Biden Lead Texas Democratic Presidential Nomination Race; Trump Impeachment Trial Leaves Texans' Views Unwavering - UT News
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
How Joe Biden is Defusing Tensions With the Left | Time
Democrats see Biden and Sanders as very different ideologically | Pew Research Center
UMass poll gives Joe Biden, Bernie Sanders edge in 2020 New Hampshire Democratic primary - masslive.com
Biden holds double-digit lead over Sanders nationally: poll | The Hill
Emerson Polling - National Poll: Sanders Tied with Biden; O'Rourke Gets Post-Announcement Bump
How Joe Biden became the presumptive Democratic nominee — polling analysis - CBS News
KING 5 News poll: Biden edges Sanders days before Washington presidential primary | king5.com
UH Poll: Biden, Sanders Virtually Tied In Texas – Houston Public Media
Polls show Biden, Sanders and Warren at top of 2020 Democratic field - CBS News
Biden And Sanders Amp Up Criticism As Polls Show Edging Ahead In Democratic Race : NPR
Trump Competitive Against Candidates Not Named Biden, Sanders
Bernie Sanders supporters not yet on board with voting for Joe Biden
Chart: Bernie Sanders Takes the Lead | Statista
Bernie Sanders leads Pa. primary in poll, with close race against Trump
