Sanders, Warren, Biden lead the Democratic Primary in California - Change Research
Polls show Biden, Sanders and Warren at top of 2020 Democratic field - CBS News
Poll Finds Presidential Race Still Wide-Open in California | KQED
Elizabeth Warren and Joe Biden drop in new 2020 poll - Los Angeles Times
How United Are Democrats? A 96-0 Data Point Offers a Hint - The New York Times
How Biden, Warren and Sanders fare vs. Trump in 2020 election polls
Democratic polls 2020: Elizabeth Warren rises as Joe Biden clings to delegate edge — CBS News Battleground Tracker - CBS News
Elizabeth Warren Rises to Tie Joe Biden in Poll of New York Democrats - WSJ
Biden, Warren and Sanders top 3 national polls - POLITICO
New CNN poll puts Biden in the lead; Sanders and Warren behind by 10+ points - YouTube
Warren's Polls Have Leveled Off — At Least For Now | FiveThirtyEight
KQED Poll: Harris Slips in California, as Warren, Sanders and Biden Lead the Pack | KQED
2020 poll: Elizabeth Warren boosted by debates but Biden paces 2020 Democratic field | CNN Politics
Elizabeth Warren's new role: Key Joe Biden policy adviser | AP News
Biden holds steady, Warren slips in national poll as Iowa caucuses approach - ABC News
Biden, Warren lead in latest NBC/WSJ 2020 Democratic poll
Biden Plummets, Sanders and Warren Rise in New National Poll – Rolling Stone
Warren Leads Tight Iowa Race as Biden Fades, Poll Finds - The New York Times
Elizabeth Warren jumps to 7-point lead over Joe Biden in new poll
NBC/WSJ poll: Biden, Warren top 2020 Democratic field
Saint Anselm poll: Buttigieg surges to 10 percentage point lead over Biden, Warren in NH
National poll shows Biden, Warren pulling ahead - YouTube
Poll: Elizabeth Warren within striking distance of Joe Biden in Nevada
