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Bernie Sanders draws sharp contrasts between himself and Joe Biden
By Gregory Krieg & Kate Sullivan
Biden picks up endorsement of firefighters union as Trump blasts labor leaders
By John Wagner
Don't be fooled: Joe Biden is no friend of unions
By Gabriel Winant
In Pennsylvania, Joe Biden Finds Support Where He Most Needs It (Published 2019)
By Trip Gabriel
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Trump attacks Biden despite Kushner directive to lay off Dem field
By Marc Caputo & Gabby Orr
How Joe Biden 'underwent a cosmetic overhaul to make himself more appealing to voters'
By Ariel Zilber
Firefighters union endorses Joe Biden for president
By Arlette Saenz
Trump goes after Biden — and against advisers' advice
By Jeremy Diamond
The latest CNN poll on 2020 Democrats : Live updates
By Harry Enten