"In 1979 our youngest son David was diagnosed with cancer," Ted Oparowski says in the ad.
His wife, Pat, then says Romney spent time with their son in the hospital, helped him draft a will, and at his request delivered his eulogy.
The ad is initially running in Wisconsin and Ohio, two crucial Midwestern battleground states, and has $4.2 million behind it. Romney has closed the gap in recent polls in both states but continues to have fairly high personal unfavorable ratings — something this ad seeks to counteract.
The group plans to expand its buy and begin running the ad in the coming days, according to their statement.