USC Dornsife/LA Times poll: Biden is the favorite among likely voters at nearly 2:1 - Press Room USC
Bernie Sanders Pulls Away From Pack in California | KQED
UMass Amherst/WCVB Poll: African American voters seeking candidate who can beat Trump
New poll shows Joe Biden ahead of Bernie Sanders in Missouri presidential primary | FOX40
Sanders, Biden are neck-and-neck in new NBC/WSJ national poll
UMass poll gives Joe Biden, Bernie Sanders edge in 2020 New Hampshire Democratic primary - masslive.com
Bernie Sanders supporters not yet on board with voting for Joe Biden
Chart: Bernie Sanders Takes the Lead | Statista
Biden And Sanders Amp Up Criticism As Polls Show Edging Ahead In Democratic Race : NPR
New poll shows Bernie Sanders in the lead in California | KRON4
Joe Biden holds the largest lead over President Donald Trump in battleground states | YouGov
WMUR/CNN poll: Sanders holds big lead over Clinton; Biden key factor
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
Biden Way Ahead in Sunshine State | FAU Business
US election 2020: Five charts on the Democratic race to take on Trump - BBC News
CNN 2020 poll: Joe Biden has double-digit lead over Bernie Sanders - CNN Video
Democrats see Biden and Sanders as very different ideologically | Pew Research Center
On Super Tuesday “Gaps” - Edison Research
Saint Anselm poll: Buttigieg surges to 10 percentage point lead over Biden, Warren in NH
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
KING 5 News poll: Biden edges Sanders days before Washington presidential primary | king5.com
CNN Poll of Polls: Biden and Sanders lead national Democratic primary | CNN Politics
Poll: Biden leads Sanders by 22 points – The Hill
Polls show Biden, Sanders and Warren at top of 2020 Democratic field - CBS News
