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
New poll shows Joe Biden as the leading 2020 Democratic candidate
Texas primary: Bernie Sanders, Joe Biden tied, poll says | kvue.com
Sanders Supporters Don't Love Joe Biden. How Much Will That Matter? - Morning Consult
What Super Tuesday data tells us about who voted and why | PBS NewsHour
New poll shows Sen. Bernie Sanders with double-digit lead in California | FOX 5 San Diego
Polls show Biden, Sanders and Warren at top of 2020 Democratic field - CBS News
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
Warren, Biden in virtual dead heat in Saint Anselm College poll of NH primary voters
Kamala Harris had a very good first month of the 2020 Democratic primary campaign | CNN Politics
Warren Leads Tight Iowa Race as Biden Fades, Poll Finds - The New York Times
Biden leads Sanders by 16 points in post-Super Tuesday poll
New poll shows Joe Biden ahead of Bernie Sanders in Missouri presidential primary | FOX40
CNN Poll of Polls: Biden and Sanders lead national Democratic primary | CNN Politics
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
USC Dornsife/LA Times poll: Biden is the favorite among likely voters at nearly 2:1 - Press Room USC
KING 5 News poll: Biden edges Sanders days before Washington presidential primary | king5.com
2020 Democratic polls: Biden, Warren, Harris, Sanders on top in early contests, CBS News Battleground Tracker finds - CBS News
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
WMUR/CNN poll: Sanders holds big lead over Clinton; Biden key factor
Yahoo News/YouGov: Biden leads Sanders ahead of Michigan primary | YouGov
Sanders, Biden are neck-and-neck in new NBC/WSJ national poll
