LAS VEGAS — Sen. Cory Booker brought a campaign message centered on affordability to members of Nevada’s Culinary Union on Monday, urging them to turn out and work to mobilize voters with the midterms three weeks away. Booker, a New Jersey Democrat who said Las Vegas is familiar to him because his mother lives there, spoke about the cost of gas, rent and groceries. He also addressed the crowd in English and Spanish, rallying union members to organize ahead of November’s election. “Right now in Nevada so much is relying on you,” Booker said, urging members to outwork their political opponents. The Culinary Union represents about 60,000 workers and is a major political force in Nevada. Union President Diana Valles said members were receptive to Booker’s message, describing people as angry about current conditions and ready to get involved. Maria Estrada, a union member, highlighted housing stability as a central concern. “If you don’t have a house,” she said, “you don’t have something not to offer to family.” Asked what Democrats would do about affordability if they regain control of the House and Senate, Booker said his leading priority would be reducing costs. He named health care as one area, calling for restored coverage and lower medical expenses. He also said gas prices should be made “reasonable by ending a war” and criticized tariffs, arguing they have added to rising expenses. Booker’s visit came as Nevada was being treated as a battleground state in a consequential election year. His appeal focused on household costs and the role of union members in turning out voters, rather than on detailed legislative proposals.