Three popular delis from Boston’s Polish Triangle neighborhood will face-off this Sunday, May 3, for the title of the city’s best kielbasa during a daylong celebration at the Polish American Citizens Club on Boston Street in Dorchester.

“We thought it would be something special—this is the first time it’s ever happened,” said Peter Suchicki, president of the Polish American Congress of Eastern Massachusetts and organizer of the event.

Suchcicki said the festival is being held in honor of Polish Constitution Day to celebrate the ratification of Poland’s Constitution on May 3, 1791. He said he hopes the event will help raise awareness about Boston’s Polish community and add some liveliness to the holiday.

The day will begin with a Mass at Our Lady of Czestochowa Church, followed by a parade down Boston Street to the Polish American Citizens Club, where leaders in Boston’s Polish community will speak. A cultural hour featuring the Krakowiak Polish Dancers and a demonstration from Polish military re-enactors called Hussars will be held on the second floor of the club.

In the afternoon, festival attendees will have the opportunity to sample kielbasa from the Polish Triangle’s Baltic Deli, Euromart and DJ’s European Market and Deli, and cast their votes for the best kielbasa.

“It’s very nice to do something Polish and bring together the Polish community,” said Joanna Barcikowski, owner of Baltic Deli. She said her deli plans to offer a grilled kielbasa and sauerkraut sandwich at this weekend’s cook-off.

Alina Morris, owner of DJ’s Market, said she hopes the event will be an annual draw for the Polish community in Dorchester and South Boston‑ and beyond.

“I seem to feel a lot more excitement in the neighborhood over this festival coming up,” she said.

Morris, whose father bought DJ’s Market 30 years ago, said her kielbasa recipe is the oldest one sold in the neighborhood. She said DJ’s Market will also sell Polish donuts, poppyseed cake and kielbasa chili during the festival.

Darek Radko, whose father, Edward Radko, owns Euromart, said he’s happy about the deli’s involvement in the festival. Dorchester’s Polish community has dwindled in the past few years because of a stagnant economy and a large number of young families moving from the neighborhood to the suburbs.

“We’re trying to help the business, help the people, bring the Polish culture back to Boston,” he said.

Proceeds from the festival will support the beautification of Casimir Pulaski Park, a small track of land in the Triangle that the Polish American Congress secured from the Massachusetts Department of Transportation last year, Suchcicki said. The Congress wants to install a new retaining wall, a fence and shrubbery in the park.

Suchcicki said he’s proud the event has inspired so many organizations and businesses to come together for their common love of Polish heritage, and he hopes the event will engage residents from outside of the tight-knit Triangle community.

“I think we have a lot to offer, whether it’s historical or cultural, or our food and music,” Suchcicki said. “We’re really trying to expose our culture, our history, our achievements, and welcome in all Americans to participate in and enjoy what we have to offer.”

You can learn more about this weekend’s events at polishfestboston.com.