Harris surges, Biden slips after debates: polls

The two Democratic presidential candidate debates appear to have reshuffled the deck in the crowded field, with California Senator Kamala Harris surging and former vice president Joe Biden slipping.Three polls conducted since last week's debates have shown eroding support for the 76-year-old Biden, who has been the frontrunner since entering the race for the 2020 Democratic presidential nomination in late April.Harris, the 54-year-old junior senator from California, picked up substantial backing