All eyes on faltering Biden ahead of first debate
The 2020 Democratic candidates for president are beginning the most important week of their campaigns with the front-runner looking more vulnerable than ever.
Former Vice President Joe Biden has seen his poll ratings dip amid controversies over hot-button issues such as race and abortion. His responses have left many Democrats dissatisfied, sparking fresh questions about his judgment — and about the durability of his support.
The rest of the field is also unsettled.
Sen. Bernie Sanders (I-Vt.), who had been the clear No. 2 to Biden, has come under increasing...