Trump, Biden go on battleground blitz for crucial swing states with 2 days to go
02:16On Saturday, President Donald Trump made four stops in Pennsylvania while Joe Biden campaigned with Barack Obama in Michigan, just three days before the election. Trump sowed doubt in the results and also retweeted a video of a Biden campaign bus followed by Trump supporters. But Biden says the mood of his campaign is still hopeful. NBC’s Kelly O’Donnell reports for Sunday TODAY from Pittsburgh.