KQED Poll: Bernie Sanders Dominates the Field in California | KQED
Sanders, Warren, Biden lead the Democratic Primary in California - Change Research
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
Polls show Biden, Sanders and Warren at top of 2020 Democratic field - CBS News
Poll: Biden leads Sanders by 22 points – The Hill
Why Bernie Sanders Is Electable, Too
NBC News poll: Biden holds narrow lead over Sanders in South Carolina
Bernie Sanders ahead of Joe Biden in Texas, new poll shows | FOX 5 San Diego
Sanders Supporters Don't Love Joe Biden. How Much Will That Matter? - Morning Consult
Chart: Biden Feeling the Bern | Statista
CNN Poll of Polls: Biden and Sanders lead national Democratic primary | CNN Politics
Poll: Biden has a small edge over Sanders in Nevada – The Nevada Independent
Sanders banked on young voters. Here's how the numbers have played out | PBS NewsHour
Biden, Sanders Have Nearly Identical Lead Over Trump in Hypothetical Matchup
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
2020 Democratic polls: Biden, Warren, Harris, Sanders on top in early contests, CBS News Battleground Tracker finds - CBS News
Warren Leads Tight Iowa Race as Biden Fades, Poll Finds - The New York Times
Biden leads Sanders in new Michigan poll - YouTube
New poll shows Joe Biden ahead of Bernie Sanders in Missouri presidential primary | FOX40
Don't Worry About the Democratic Presidential Polls | The New Yorker
Yahoo News/YouGov: Biden leads Sanders ahead of Michigan primary | YouGov
Biden Boasts 16-Point Lead Over Sanders in Democratic Presidential Race - Morning Consult
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
WMUR/CNN poll: Sanders holds big lead over Clinton; Biden key factor
