Pennsylvania Senate candidate Rep. Lou Barletta posted an emotional video on Twitter Sunday, bucking criticism of his vote for the Republican health care bill.

A new ad from Sen. Bob Casey hits Barletta on his vote for the American Health Care Act during Republicans’ prolonged effort to roll back the 2010 health care law last year. The ad is narrated by a constituent with twin daughters with cancer.

“Thank God we had health insurance,” the constituent says in the ad. “But if Lou Barletta has his way, kids like mine could be denied the care they need.”

In his response on Twitter, Barletta discusses his 18-month-old twin grandson currently receiving chemotherapy treatment.

“[Casey] should take the commercial down and he should be ashamed of himself,” Barletta said.

Bob Casey just released an insensitive and personal attack ad accusing Lou Barletta of wanting to rip away health care from twin children with cancer, after Lou personally told Casey of his 18-month-old twin grandson currently undergoing chemo for cancer. Here is Lou’s response: pic.twitter.com/CXgMq1f4YA

— Lou Barletta (@louforsenate) October 14, 2018

The AHCA would have rolled back the 2010 health law’s protections for patients with pre-existing conditions, experts say.

The AHCA “would have allowed states to waive the ACA’s benefit requirements and let insurers charge higher premiums to people with pre-existing conditions with a gap in coverage,” Kaiser Family Foundation policy expert Larry Levitt tweeted Friday.

The House passed the AHCA repeal and replace bill in 2017, which would have allowed states to waive the ACA’s benefit requirements and let insurers charge higher premiums to people with pre-existing conditions with a gap in coverage.

— Larry Levitt (@larry_levitt) October 12, 2018

Barletta is not the only Republican who has invoked personal stories to deflect attention from the unpopular Republican health bill.

Rep. John Faso — who is running for re-election in New York’s 19th District and voted for the AHCA — ran an ad recently featuring his wife, a cancer survivor. And in California’s 48th District, Rep. Dana Rohrabacher, who also voted for the AHCA, talks about his daughter’s leukemia diagnosis in a recent ad.

Inside Elections with Nathan L. Gonzales rates the Pennsylvania Senate race as Likely Democratic, New York’s 19th District race as Tilt Democratic and California’s 48th District race as Tilts Democratic.