New poll shows Bernie Sanders is the front runner in Nevada
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
KQED Poll: Bernie Sanders Dominates the Field in California | KQED
Bernie Sanders supporters not yet on board with voting for Joe Biden
Polls show Biden, Sanders and Warren at top of 2020 Democratic field - CBS News
Lyceum poll: Bernie is Trump's toughest rival in Texas
Biden leads Sanders by 16 points in post-Super Tuesday poll
Sanders, Biden are neck-and-neck in new NBC/WSJ national poll
New poll shows Joe Biden ahead of Bernie Sanders in Missouri presidential primary | FOX40
2020 Poll: Biden, Sanders Lead Democratic Race To Take On Trump For President : NPR
Bernie Sanders, Joe Biden, Elizabeth Warren lead new California poll
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
Biden, Warren and Sanders top 3 national polls - POLITICO
Democrats vote in Florida and more: What polls show for Biden, Sanders
5 Democratic contenders lead Trump in head-to-head matchups: POLL - ABC News
KQED Poll: Harris Slips in California, as Warren, Sanders and Biden Lead the Pack | KQED
Weighing Biden vs. Sanders? Compare where they stand on key issues | PBS NewsHour
Bernie Sanders surges to join Biden atop Democratic presidential pack in new poll | CNN Politics
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
Bernie Sanders is now tied with Joe Biden Reuters poll
Biden And Sanders Amp Up Criticism As Polls Show Them Separating From Field - capradio.org
Iowa Poll: Biden, Sanders top early look at possible 2020 caucus field
Biden Way Ahead in Sunshine State | FAU Business
Biden Boasts 16-Point Lead Over Sanders in Democratic Presidential Race - Morning Consult
How Biden, Warren and Sanders fare vs. Trump in 2020 election polls
