After a bruising weekend for Democrats, President Barack Obama on Tuesday mounted a vigorous defense of Hillary Clinton, her campaign's transparency and her fitness for the presidency, and blasted Republicans as fanning "anger and hate."
Obama painted a stark picture of the stakes in the face-off between Clinton and Republican rival Donald Trump, and tried to persuade Democrats that he's all-in behind his former secretary of state's bid for the White House.
"Hillary Clinton is steady and she is true," Obama told a group of cheering Democrats at an outdoor rally. "I need you to work as hard for Hillary as you did for me."
Obama aggressively stepped into a void left by Clinton, who is taking time off from campaigning after being diagnosed with pneumonia.
Obama is seeking to generate momentum for Clinton in a race that has become uncomfortably close for many Democratic supporters. The latest poll by Quinnipiac University found her with a 5 percentage-point edge over Republican Donald Trump in Pennsylvania.
Obama's campaign appearance at an outdoor plaza in front of the Philadelphia Museum of Art was his third for Clinton, including his speech at the Democratic National Convention. The president, who remains broadly popular among the Democratic base, is viewed as a key asset in pushing die-hard Democrats to the polls.
But the president's day job has kept him from being a fixture. Obama recently returned from 10 days abroad in Asia and will attend a United Nations meeting next week, leaving him just six weeks of full-throttle campaigning for Clinton.
Trump's campaign, meanwhile, responded to Obama's appearance with a statement suggesting he was shirking his duties.
"Shouldn't you be at work?" it read. "President Obama would rather campaign for Hillary Clinton than solve major problems facing the country."
At the rally, Obama made both the case for Clinton and for his own presidency. He claimed successes on diplomacy, health care, winding down the war in Afghanistan and reviving economy, which showed new strength Tuesday in a Census report documenting a jump in household incomes in 2015.
"Republicans don't like to hear good news right now but it's important to understand this is a big deal," Obama said of the new report, later joking: "Thanks, Obama."
The candidate whom Obama hopes will succeed him left a 9/11 ceremony after about 90 minutes Sunday and struggled to stay on her feet while she was helped into a van. Clinton's campaign said she had "overheated," but later revealed that she had been diagnosed Friday with pneumonia. The episode played into Trump's efforts in recent weeks to raise doubts about Clinton's stamina.
Clinton's campaign was already on the defensive after she used the term "basket of deplorables" to describe half of Trump's supporters.
White House spokesman Josh Earnest said Obama doesn't feel like he needs to help Clinton with damage control.
"I think the president's belief that she'd be an excellent president of the United States is something that you've heard him say many times. And I can tell you there's nothing that happened yesterday that has changed that assessment at all," Earnest said.
Asked about Clinton's use of the term "basket of deplorables," Earnest made clear that "it's not the president's phrase." He also said there has been a "disturbing tendency on the part of Republicans in Washington, D.C., to try to appeal to extremists for political support."
After the speech, Obama was due to address donors at a fundraiser for the Clinton campaign and the Democratic National Committee. About 25 attendees, who contributed $33,400 each, are expected to attend. The event hosts gave $100,000. He then was flying to New York City for a Democratic Congressional Campaign Committee fundraiser.