Biden takes the lead over Trump in battleground state Pennsylvania

Democratic presidential candidate former Vice President Joe Biden and vice presidential candidate Sen. Kamala Harris. Picture: AP Photo/Carolyn Kaster
Joe Biden is leading Donald Trump in the state of Pennsylvania.
If the former vice president goes on to win the battleground state - which is worth 20 electoral votes - he will have surpassed the 270 Electoral College votes required to carry the White House.