Saint Anselm poll: Buttigieg surges to 10 percentage point lead over Biden, Warren in NH
New CNN poll puts Biden in the lead; Sanders and Warren behind by 10+ points - YouTube
Poll: Biden leads Sanders by 22 points – The Hill
UMass poll gives Joe Biden, Bernie Sanders edge in 2020 New Hampshire Democratic primary - masslive.com
Democrats see Biden and Sanders as very different ideologically | Pew Research Center
Why Bernie Sanders Is Electable, Too
Bernie Sanders ahead of Joe Biden in Texas, new poll shows | FOX 5 San Diego
On Super Tuesday “Gaps” - Edison Research
2020 Democratic polls: Biden, Warren, Harris, Sanders on top in early contests, CBS News Battleground Tracker finds - CBS News
Joe Biden holds the largest lead over President Donald Trump in battleground states | YouGov
CBS/YouGov Poll: Debate watchers believe Bernie Sanders made the best case for defeating Trump | YouGov
New poll shows Bernie Sanders in the lead in California | KRON4
Bloomberg qualifies for debate, Sanders leads ahead of Nevada caucuses | PBS NewsHour
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
Biden Boasts 16-Point Lead Over Sanders in Democratic Presidential Race - Morning Consult
USC Dornsife/LA Times poll: Biden is the favorite among likely voters at nearly 2:1 - Press Room USC
New poll shows Joe Biden ahead of Bernie Sanders in Missouri presidential primary | FOX40
WMUR/CNN poll: Sanders holds big lead over Clinton; Biden key factor
Bernie Sanders supporters not yet on board with voting for Joe Biden
Warren Leads Tight Iowa Race as Biden Fades, Poll Finds - The New York Times
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
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
CNN Poll of Polls: Biden and Sanders lead national Democratic primary | CNN Politics
UMass Amherst/WCVB Poll: African American voters seeking candidate who can beat Trump
