“The only thing that can tear America apart is America itself, and that's exactly what Donald Trump has been doing,” he said.
Trump on Saturday will travel to Pennsylvania, which as yet has not seen the dramatic coronavirus spikes that are threatening hospital capacity in Wisconsin and other battleground states. Still, nearly 8,700 people in the state have died of the disease this year.
Biden will campaign in Michigan, joined by former President Barack Obama, for whom he served as vice-president.
Trump won both Pennsylvania and Michigan by narrow margins in his surprise 2016 victory. Reuters/Ipsos opinion polls show Biden leading Trump by 5 percentage points in Pennsylvania and 9 points in Michigan.
A RECORD TURNOUT
With a polarising president on the ballot and a deadly pandemic casting the role of government into high relief, analysts expect a record number of voters to participate in the election.
At least 86 million Americans have already cast ballots in person or through the mail, according to the University of Florida's Elections Project, or 63% of the total 2016 turnout.