In the final sprint before Tuesday's New Hampshire primary, Democratic presidential candidates are taking a more sharply negative tone about their rivals than they have up until now.
The top target is former South Bend mayor Pete Buttigieg. He faced a barrage of attacks as the other Democratic candidates seek to blunt his momentum from a strong showing in Iowa.
Former Vice President Joe Biden launched the most pointed attacks. Biden had mostly avoided criticizing his rivals by name before his fourth place finish in Iowa.