Bernie Sanders surges to top in latest poll, takes lead over Biden as Warren slips
Democratic debate: Biden, Warren and Sanders spar over healthcare - BBC News
Trump Competitive Against Candidates Not Named Biden, Sanders
Biden, Warren and Sanders top 3 national polls - POLITICO
Bernie Sanders Pulls Away From Pack in California | KQED
Biden Boasts 16-Point Lead Over Sanders in Democratic Presidential Race - Morning Consult
Sanders, Biden are neck-and-neck in new NBC/WSJ national poll
WMUR/CNN poll: Sanders holds big lead over Clinton; Biden key factor
Latino poll: Biden and Sanders are favorites, racism a concern
Suffolk/Globe poll finds Sanders, Warren, Buttigieg, Biden in tight race in N.H. - The Boston Globe
Texas primary: Bernie Sanders, Joe Biden tied, poll says | kvue.com
South Carolina primary: Joe Biden leads Bernie Sanders in NBC-Marist poll
Election 2020: Bernie Sanders leads Joe Biden in Emerson poll
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
Biden, Warren, Sanders stay on top; health is now an issue for Sanders: POLL - ABC News
UH Poll: Biden, Sanders Virtually Tied In Texas – Houston Public Media
New poll shows Joe Biden ahead of Bernie Sanders in Missouri presidential primary | FOX40
New CNN poll suggests a Bernie-Biden race for the Democratic nomination
Frontrunner no more: California poll puts Harris on top and Biden (way) down - CalMatters
Biden Way Ahead in Sunshine State | FAU Business
Bernie Sanders is now tied with Joe Biden Reuters poll
Poll: Where Michigan voters stand ahead of the 2020 Democratic primary election
Bernie Sanders Is Out-Polling Joe Biden | US News
Biden plummets in new national poll, ceding top spot to Bernie - POLITICO
Poll Position:' Biden leads Bernie in national poll | News, Sports, Jobs - The Nashua Telegraph
