A report that Mr. Biden is seeking a “middle ground” on climate change has sparked attacks from progressive Democratic candidates.
The former vice president’s announcement video was broad and oratorical. Notably absent: policy, biography, ideology.
A Democratic divide between older moderates and a growing group of progressive and diverse voters.
In a political career that stretches 50 years, Joseph R. Biden Jr. has been a master of an in-your-space intimacy that is proving to be a liability.
In a self-reflective appearance in Delaware, Joseph R. Biden Jr. said he is still assessing whether to join the race, and wants to ensure he could make a “first-rate effort.”