Former Rep. Gabrielle Giffords (D-Ariz.) will make a rare public appearance on behalf of her former aide Ron Barber, who is running in a special election for the seat she resigned, his campaign announced Sunday.

The two will appear at a free concert and get-out-the-vote event Saturday just before the special June 12 special election. Barber faces Republican Jesse Kelly, who narrowly lost to Giffords in 2010, in the contest to serve out the remainder of her term. Both have said that they will run for a full two-year term if elected.

"Gabby is eager to get back home to Tucson and help get out the vote for Ron," said Giffords' husband, Captain Mark Kelly, U.S. Navy (Ret.) on Barber's campaign website. "We need Ron Barber in Congress to stand up for Southern Arizonans and to help rebuild Arizona’s middle class."

Giffords resigned her seat in January to focus on her recovery after being shot in the head the previous January in Tucson by a gunman. Six died and 12 were wounded, including Barber.

The Tucson Weekly notes that it will be her first public appearance in Tucson since she resigned.

CORRECTION: A previous version of this post incorrectly listed Giffords as (R-Ariz.)

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