This was the First Lady's first political trip of her husband’s presidency.
Jill Biden spoke at an early voting rally at Middlesex College in Edison, New Jersey, where Democratic Governor Phil Murphy is running against Republican Jack Ciattarelli, an ex-state Assembly member.
That evening, she attended an event in suburban Richmond, Virginia, alongside Terry McAuliffe, a former governor who is running to regain the post and facing a tighter race than expected against Republican Glenn Youngkin, a businessman.
'We can't get complacent. We have to get to work,' she demanded.
But the loudest applause of the event came when Jill Biden joked, 'Heck, today's Friday. So go grab a beer and go vote.'
Joe Biden also weighed in on the gubernatorial race - but seemed to suggest a loss in Virginia would not necessarily be a bellwether for the midterms.
'Sometimes it's been right. Sometimes it's been wrong.
'I think Terry's going to win. If he doesn't win I don't know how much you read into that. But I think he'll win.'
The trip underscores the political stakes for the White House.
In Virginia especially, which President Biden won by a comfortable 10 percentage points last year, a defeat in the governor's race could spell trouble for Democrats in the 2022 midterms, when control of Congress is at risk of flipping to Republicans.
The president's approval ratings have plummeted to some of the lowest levels of his White House tenure amid anxiety over possible shortages of goods, inflation, congressional fights over infrastructure and voting rights.
The first lady concluded her trip by addressing a crowd of about 300 at a grassroots mobilization rally outside a recreation center in Henrico, Virginia.
She was twice interrupted by protesters who appeared to be decrying federal fossil fuel subsidies, and she declared, laughing: 'You've gotta love democracy.'
'Virginia, you need somebody that you can trust, and that's Terry McAuliffe,' Jill Biden stated.
She warned of misinformation becoming more prevalent online with Election Day looming, adding: 'There are a lot of people who like to twist the words around. But we know Terry. We know his heart.'
McAuliffe revealed Joe Biden would be visiting Virginia in the coming days, as are former President Barack Obama and Stacey Abrams, the 2018 Georgia gubernatorial candidate who has risen to national prominence.