A political attack ad in Georgia's high-profile Congressional race is drawing backlash from Democrats and Republicans for using footage of a severely wounded U.S. Majority Whip Steve Scalise following last week's shooting.

The ad, which The Atlanta Journal Constitution reports is being funded by a little-known group called the Principled PAC, opens with footage of paramedics wheeling Scalise, 51, on a stretcher after a gunman opened fire on him and others during the Republican Congressional Baseball Team's practice Wednesday.

WASHINGTON — Three days after he was shot in the hip by a high-velocity rifle, U.S. Rep. Ste…

Scalise, R-Jefferson, was critically injured by the bullet to his hip during the attack. His condition has since been upgraded to serious but doctors have said his recovery is expected to be lengthy.

Four others were also wounded. Authorities shot and killed the suspected gunman.

The ad is in response to Georgia’s 6th District race to replace Tom Price, who was appointed U.S. Health and Human Services secretary. The Georgia election has drawn national interest and has already become the most expensive U.S. House race ever.

AJC reports that Democrat Jon Ossoff and Republican Karen Handel have each strongly condemned the ad and its use of footage from the shooting's aftermath. The ad urges Republicans to vote for Handel to "stop" Ossoff and Democrats.

"The same unhinged leftists cheering last week’s shooting are all backing Jon Ossoff," the ad's narrator says. "And if he wins, they win.”

Despite backlash from both candidates, the Washington Examiner reported that a spokesman for the Republican-backing Principled Leadership Project that the group stands by the ad.

Watch the TV spot here.

Follow Elizabeth Crisp on Twitter, @elizabethcrisp.