Consuelo Perez, a nanny who is part of the Dominican Development Center, an affiliate of N.D.W.A. in Massachusetts, feels that her job is “dreaming for other people’s children.”

Ms. Perez, who was in Las Vegas for the group’s assembly, has a daughter with special needs whom she comes home to every day after taking care of another family’s children. “You grow to love this second family, but it hurts to know that those opportunities can’t come to your own.”

She supports Senator Bernie Sanders of Vermont, she said, not only because of his labor advocacy but also because “Medicare for All,” his signature policy proposal, would help her take care of her daughter.

“We are taking care of kids who could be the future senators and presidents of the United States. I can’t dream like that for my own daughter,” she said. “That’s why we have to do this work.”

Ahead of the 2020 election, the organization’s political arm has focused on garnering candidate support for a federal version of a Domestic Workers Bill of Rights, a path to citizenship for domestic workers and their families, and universal child care.

Former Vice President Joseph R. Biden Jr., Mr. Sanders, Senator Elizabeth Warren of Massachusetts and Pete Buttigieg, the former mayor of South Bend, Ind., have all said that they endorse the federal Domestic Workers Bill of Rights. Senator Kamala Harris of California, who dropped out last December, is one of the sponsors of the bill.

“Everything we’re doing in the policy arena to make jobs better is complemented by everything we’re doing to turn out voters and get people engaged, get people feeling like they have a voice in our democracy,” Ai-jen Poo, the founder and chief executive of the group said in an interview this week.