Is Warren Becoming a Stronger 2020 Candidate Than Biden? | Vanity Fair
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
Trump falls into virtual tie with Biden, Warren in Arizona poll
2020 Poll: Biden, Sanders Lead Democratic Race To Take On Trump For President : NPR
100 Days to Election Day: Can Biden maintain lead in polls?
One Year From Election, Trump Trails Biden but Leads Warren in Battlegrounds - The New York Times
Trump Competitive Against Candidates Not Named Biden, Sanders
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2020 Democratic primary polls: Will Warren voters pick Biden or Sanders? - Vox
Elizabeth Warren, Massachusetts Senator, On Biden's VP List : NPR
Biden, Warren and Sanders top 3 national polls - POLITICO
KQED Poll: Bernie Sanders Dominates the Field in California | KQED
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Elizabeth Warren is now leading the 2020 polls - Vox
2020 Democratic polls: Warren extends lead across early states, New Hampshire and draws even with Biden in Iowa — CBS News Battleground Tracker - CBS News
Poll: Elizabeth Warren within striking distance of Joe Biden in Nevada
Elizabeth Warren Rises to Tie Joe Biden in Poll of New York Democrats - WSJ
What's happened to Warren, Biden? Dismal showings and questions about the future.
Emerson Polling - Pennsylvania 2020: Biden leads Democratic Field in Pennsylvania; Biden and Sanders lead Trump by 10 Points in General Election
New poll shows Joe Biden ahead of Bernie Sanders in Missouri presidential primary | FOX40
Poll: Biden's lead narrows, Warren rises, Sanders third, Buttigieg up
Polls show Biden, Sanders and Warren at top of 2020 Democratic field - CBS News
Biden, Warren Gain in Latest Poll of Democratic Primary Voters - WSJ
Bernie Sanders, Joe Biden, Elizabeth Warren lead new California poll
Democratic debate: Biden, Warren and Sanders spar over healthcare - BBC News
Joe Biden remains the Democratic favorite among likely voters
