One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
KING 5 News poll: Biden edges Sanders days before Washington presidential primary | king5.com
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
Biden Way Ahead in Sunshine State | FAU Business
Poll: Biden leads Sanders by 22 points – The Hill
Chart: Biden Has Clear Lead Over Sanders, Trump | Statista
Joe Biden holds the largest lead over President Donald Trump in battleground states | YouGov
Sanders Supporters Don't Love Joe Biden. How Much Will That Matter? - Morning Consult
Sanders, Biden are neck-and-neck in new NBC/WSJ national poll
USC Dornsife/LA Times poll: Biden is the favorite among likely voters at nearly 2:1 - Press Room USC
Why Bernie Sanders Is Electable, Too
UMass Amherst/WCVB Poll: African American voters seeking candidate who can beat Trump
Saint Anselm poll: Buttigieg surges to 10 percentage point lead over Biden, Warren in NH
Chart: Bernie Sanders Takes the Lead | Statista
On Super Tuesday “Gaps” - Edison Research
New poll shows Joe Biden ahead of Bernie Sanders in Missouri presidential primary | FOX40
Biden Boasts 16-Point Lead Over Sanders in Democratic Presidential Race - Morning Consult
US election 2020: Five charts on the Democratic race to take on Trump - BBC News
Biden, Sanders Have Nearly Identical Lead Over Trump in Hypothetical Matchup
WMUR/CNN poll: Sanders holds big lead over Clinton; Biden key factor
Biden leads Sanders by 16 points in post-Super Tuesday poll
CNN 2020 poll: Joe Biden has double-digit lead over Bernie Sanders - CNN Video
Polls show Biden, Sanders and Warren at top of 2020 Democratic field - CBS News
UMass poll gives Joe Biden, Bernie Sanders edge in 2020 New Hampshire Democratic primary - masslive.com
