With presumptive Democratic presidential nominee Hillary Clinton watching her lead in the polls narrow against presumptive GOP nominee Donald Trump, her campaign is looking Tuesday to lean on the popularity of the sitting president for a boost. 

Tuesday is set to be the first time President Barack Obama, who endorsed Clinton, will appear at a campaign event alongside the former secretary of state. You can watch a live stream of the event in Charlotte, North Carolina, by clicking here or by watching the embedded video at the bottom of the article.

Obama's popularity is near his all-time high. A recent Washington Post/ABC News poll found he had an approval rating of 56 percent, the highest figure since Osama Bin Laden was killed in 2011. Obama has proved an eager campaigner for Clinton, saying he was "fired up" in his endorsement.

"I don’t think there’s ever been someone so qualified to hold this office," Obama said in his endorsement video posted to Clinton’s campaign website. "She’s got the courage, the compassion and the heart to get the job done."

Obama's support comes at a key time in the race. Clinton leads Trump by just 5 percentage points in a hypothetical general election, an NBC News weekly tracking poll released Tuesday found. It's been a rough few days for Clinton's image. The candidate was questioned for hours by the FBI last week in the investigation into her use of a private email server as secretary of state.

Clinton is viewed unfavorably by 55.5 percent of the country, according to the RealClearPolitics average of polls. The oft-controversial Trump is viewed unfavorably by 61.1 percent of the country, the same RealClearPolitics average found. 

Obama has been willing to take on Trump. While not calling out the GOP candidate by name, he alluded to him while speaking in Canada last week, saying Trump has never "shown any regard for workers, has never fought on behalf of social justice issues."

"That’s not the measure of populism," Obama said, the Los Angeles Times reported. "That's nativism, or xenophobia, or worse."