All coverage
The 2020 race is dominated by 70-somethings
By Zach Wolf
Castro Questions Biden's Memory at Debate: 'Are You Forgetting What You Said Two Minutes Ago?' (Published 2019)
By Nick Corasaniti
Democratic polls 2020: Elizabeth Warren rises as Joe Biden clings to delegate edge — CBS News Battleground Tracker
By Fred Backus, Anthony Salvanto & Kabir Khanna
Democratic Debate: 'Medicare For All' Plans Divide 2020 Candidates
By Danielle Kurtzleben
Read Joe Biden's baffling debate answer about record players
By Zack Beauchamp
Biden is labeled a moderate. But his agenda is far more liberal than Hillary Clinton’s.
By Alex Roarty
Joe Biden Should Drop Out
By Jamil Smith
This has become the central dividing line in the Democratic presidential race
By Ronald Brownstein
Julián Castro says attack against Biden during Democratic debate was not personal
By Veronica Stracqualursi
The third Democratic debate: Live updates
By Veronica Rocha, Meg Wagner & Amanda Wills
3rd Democratic debate: Candidates clashed on health care, immigration and more
By Kendall Karson, Benjamin Siu & John Verhovek
Third Democratic Debate: The Top 10 on One Stage (Published 2019)
By Shane Goldmacher & Adriana Ramic
Elizabeth Warren and Joe Biden Will Finally Debate. Here's What to Expect. (Published 2019)
By Thomas Kaplan & Katie Glueck