Jimmy Carter’s Great-Grandson Henry Will Vote for the First Time in This Election: ‘That Means a Lot’ (Exclusive)

"He has used every minute of his life to help as many people as he could," Henry Lewis Carter, 18, tells PEOPLE of his great-grandfather

Jimmy Carter's great-grandson will be voting in his first presidential election, fresh off his 18th birthday.

"I am excited about this year’s election because it will be my first time able to vote," Henry Lewis Carter tells PEOPLE exclusively at the 100th birthday celebration of the former president in Atlanta on Tuesday, Sept 17. "And that means a lot." 

Related: All About Jimmy Carter and Rosalynn Carter's Children, Grandchildren and Great-Grandchildren

The teen — who reached voting age on Sept. 2 — also spoke of hoping to live up to the 99-year-old's legacy, after he dedicated decades of his post-presidency life to charity.

"He has used every minute of his life to help as many people as he could. That is a daunting thing to try to live up to his legacy, but I think that is something that both of us hope to achieve," Henry adds, gesturing to his 16-year-old brother, Thomas Clyde Carter.

Related: Jimmy Carter Told Son Why He Wants to Live Past 100: 'I'm Only Trying to Make It to Vote for Kamala Harris'

Henry's tribute to his famous great-granddad is among many others, including those from athletes Dale Murphy and Terry Pendleton, musicians Dave Matthews and Norah Jones, and Academy Award-winner Renée Zellweger, who gathered at the Fox Theatre on Sept. 17 to celebrate Jimmy Carter ahead of his 100th birthday on Oct. 1.

Former Presidents Barack Obama, Bill Clinton and George W. Bush also shared virtual birthday wishes. 

Related: Jimmy Carter’s Grandson Says That Days Out from 100th Birthday, He’s Still ‘Emotionally Engaged’ (Exclusive)

Jason Carter, Henry's father and Jimmy's grandson, tells PEOPLE that he is thrilled for the chance to share in a special Carter tribute concert with his teen sons.

"They are most excited about a variety of these multigenerational things," he says. "But we have had a good time reliving that music for sure."

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Chuck Leavell, who campaigned with Jimmy as a member of the Georgia-based Allman Brothers Band during the 1976 presidential election, adds that it's important for the rock and roll community to honor him.

"We feel that he’s given so much and we want to give back. And we feel this is a great way to give back," Leavell says. "And all these different artists to show up from all different walks of music. [It's] a great celebration."

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