Texas primary: Bernie Sanders, Joe Biden tied, poll says | kvue.com
UMass poll gives Joe Biden, Bernie Sanders edge in 2020 New Hampshire Democratic primary - masslive.com
Trump Competitive Against Candidates Not Named Biden, Sanders
How Joe Biden is Defusing Tensions With the Left | Time
UT/TT Poll: Sanders and Biden Lead Texas Democratic Presidential Nomination Race; Trump Impeachment Trial Leaves Texans' Views Unwavering - UT News
Very early Iowa Democratic primary poll finds Joe Biden, Bernie Sanders leading the field
New CNN poll puts Biden in the lead; Sanders and Warren behind by 10+ points - YouTube
Biden leads Sanders by 16 points in post-Super Tuesday poll
Emerson Polling - National Poll: Sanders Tied with Biden; O'Rourke Gets Post-Announcement Bump
UMass Amherst/WCVB Poll: African American voters seeking candidate who can beat Trump
Poll: Bernie, Warren surge to tie Biden atop Democratic field - POLITICO
UH Poll: Biden, Sanders Virtually Tied In Texas – Houston Public Media
Biden And Sanders Amp Up Criticism As Polls Show Edging Ahead In Democratic Race : NPR
KING 5 News poll: Biden edges Sanders days before Washington presidential primary | king5.com
Bernie Sanders, Joe Biden, Elizabeth Warren lead new California poll
2020 Poll: Biden, Sanders Lead Democratic Race To Take On Trump For President : NPR
New poll shows Sen. Bernie Sanders with double-digit lead in California | FOX 5 San Diego
New poll: Biden leads O'Rourke in Texas presidential primary, race against Sen. John Cornyn wide open
Bernie Sanders ahead of Joe Biden in Texas, new poll shows | KXAN Austin
Sanders, Biden are neck-and-neck in new NBC/WSJ national poll
Biden holds double-digit lead over Sanders nationally: poll | The Hill
KQED Poll: Bernie Sanders Dominates the Field in California | KQED
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
NH poll shows Biden, Sanders maintaining lead as Buttigieg makes surge
