How Biden, Warren and Sanders fare vs. Trump in 2020 election polls
USC Dornsife/LA Times poll: Biden is the favorite among likely voters at nearly 2:1 - Press Room USC
Poll: Biden leads Sanders by 22 points – The Hill
KQED Poll: Bernie Sanders Dominates the Field in California | KQED
Bernie Sanders ahead of Joe Biden in Texas, new poll shows | FOX 5 San Diego
Biden leads Sanders by 16 points in post-Super Tuesday poll
Democratic poll: Biden has double-digit lead over Sanders | CNN Politics
CBS/YouGov Poll: Debate watchers believe Bernie Sanders made the best case for defeating Trump | YouGov
Biden leads Sanders in new Michigan poll - YouTube
Sanders Supporters Don't Love Joe Biden. How Much Will That Matter? - Morning Consult
Texas primary: Bernie Sanders, Joe Biden tied, poll says | kvue.com
Warren Leads Tight Iowa Race as Biden Fades, Poll Finds - The New York Times
Biden Boasts 16-Point Lead Over Sanders in Democratic Presidential Race - Morning Consult
WMUR/CNN poll: Sanders holds big lead over Clinton; Biden key factor
Biden Way Ahead in Sunshine State | FAU Business
Saint Anselm poll: Buttigieg surges to 10 percentage point lead over Biden, Warren in NH
Sanders, Warren, Biden lead the Democratic Primary in California - Change Research
NBC News poll: Biden holds narrow lead over Sanders in South Carolina
Why Bernie Sanders Is Electable, Too
Yahoo News/YouGov: Biden leads Sanders ahead of Michigan primary | YouGov
Don't Worry About the Democratic Presidential Polls | The New Yorker
Biden, Sanders Have Nearly Identical Lead Over Trump in Hypothetical Matchup
