Second lady Jill Biden joined Democratic Senate hopeful Michelle Nunn and hundreds of volunteers in Atlanta on Saturday.

Biden and Nunn — who is challenging Republican David Perdue to replace retiring Sen. Saxby Chambliss (R-Ga.) in the upper chamber — worked on cleaning up a park in downtown Atlanta during an annual service day created by an organization Nunn founded 25 years ago, The Atlanta Journal-Constitution reported.

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“We have jobs, we have families,” Biden told the newspaper. “We have other obligations. The reason Michelle Nunn and a group of friends founded Hands on Atlanta Day 25 years ago is because we all know the value of community service.”

Biden added that Nunn is “someone who is making a difference in Georgia.” 

Biden’s trip to the state for a slew of fundraisers and campaign events comes as national political analysts sense growing momentum for Nunn. In recent polling, Nunn's campaign has closed the gap with Perdue and the two are currently running neck-and-neck, offering Democrats a rare opportunity to pick up a seat currently held by a Republican.

Vice President Joe Biden’s wife attended three fundraisers in the day she was in town, in addition to the service project.

Talking to the Journal-Constitution, Nunn said that she formed the service organization Hands on Atlanta two and a half decades ago because “people will always answer the call to service.”

“There’s nothing we can’t do, no wrong we can’t right, when we work together,” she said.