Barack Obama has used memories of Michelle's mother Marian Robinson, who died recently, to remind voters of the values at the heart of America.
"One of the reasons Marian and I became so close was she reminded me of my grandmother, the woman who helped raise me as a child," he said.
"They were strong, smart, resourceful women, full of common sense who, regardless of the barriers they encountered … In that sense, they both represented an entire generation of working people who, through war and depression, discrimination and limited opportunity, helped build this country," he said.
"We've all had people like that in our lives. People like Kamala's parents who crossed oceans because they believed in the promise of America.
"Good, hard-working people who managed to leave this country just a little bit better than they found it.
"That's what we yearn for," he added. "A return to an America where we work together, look out for each other.
"As Abraham Lincoln called it on the eve of civil war: our bonds of affection. The better angels of our nation. That's what our election is about."
He urged voters to hold firm to the conviction that Kamala Harris would be the next president, with Tim Walz her vice-president.
"You will elect people who will fight for you," he said. "Together, we will build a country that's more secure, more just, more equal, more free.
"Let's get to work."
