(CNN) - Priorities USA Action, a super PAC supportive of President Barack Obama, released a new ad Tuesday, tying Mitt Romney to the death of a former GST Steel worker's wife after the employee lost his job when the plant closed down.
Romney's former private equity firm, Bain Capital, acquired GST Steel in 1993, but the company went bankrupt in 2001, two years after Romney ceased day-to-day oversight of Bain.
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The ad features Joe Soptic, a former worker at the Kansas City-based steel plant, as he tells the story of how he lost health insurance benefits when the plant shuttered and reveals that his wife passed away of cancer soon after that.
"I don't know how long she was sick and I think maybe she didn't say anything because she knew that we couldn't afford the insurance," Soptic says in the ad, adding that after he took her to the hospital, they found she had stage four cancer. She died 22 days later, he says.
"I do not think Mitt Romney realizes what he's done to anyone, and furthermore I do not think Mitt Romney is concerned," Soptic says.
Soptic said his wife became ill "a short time" after the plant closed down in 2001, but Ilyona Ranae Soptic passed away in June 2006.
Romney's campaign responded to the ad Tuesday, calling the spot a "contemptible effort."
"President Obama's allies continue to use discredited and dishonest attacks in a contemptible effort to conceal the administration's deplorable economic record. After 42 months of unemployment above 8 percent, it is clear that the President and his campaign do not have a rationale for reelection," Romney spokeswoman Amanda Henneberg said in a statement.
She continued: "He focused on health care instead of the economy, he hasn't been able to pass a budget through Congress, he hasn't been able to cut the deficit like he promised, and he's done little to change the way Washington works. Mitt Romney has a Plan for a Stronger Middle Class that will jumpstart the economy and bring back millions of jobs."
Bain Capital has previously hit back against Priorities' attack ads and praised the private equity firm's success.
"Bain Capital is focused on growing great companies and improving their operations. Mitt Romney retired from Bain Capital over 13 years ago. We are not a political organization, and take no public position on any candidate. We are extremely proud of our employees and management teams, who have grown revenues in over 80 percent of our 350 companies, which include over 100 start-up investments," the company statement read.
Priorities has released four other ads this year hitting Romney over his record at Bain and spotlighting the stories of former workers at companies once purchased by Bain. The group says the latest commercial, "Understands," is part of its $20 million television and online buy, and the 60-second spot will run in the battleground states of Iowa, Florida, Pennsylvania, Virginia and Ohio.
Last week, CNN reported that Priorities has reserved $30 million this fall for broadcast and cable time.
- CNN Political Editor Paul Steinhauser contributed to this report.