Democratic candidate for Queens district attorney Greg Lasak on Thursday released his first TV that highlights his efforts to help exonerate the innocent.

The ad highlights the story of Lamar Palmer, who credits the creation of the “Wrong Man Unit” by Lasak for helping clear his name.

“He was in charge of what was known as the ‘Wrong Man Unit.’ And it’s because of the good fight that I was able to walk out a free man,” he says in the ad. “All the doors were closing and one door opened up. And that was Gregory Lasak. I had a chance at life, to be honest with you. I’m eternally grateful.”

Lasak is competing in a crowded Democratic primary in June for the Democratic nomination. Longtime District Attorney Richard Brown died earlier this month and had planned to retire later this year.