Card dealers at four Las Vegas casinos have voted to join the United Auto Workers union after ending their affiliation with a smaller organization. Nearly 1,500 gaming dealers working at Bally’s, Harrah’s, Paris and Wynn Las Vegas voted over the weekend to join the UAW. Several hundred dealers at Caesars Palace will vote this weekend on whether to join the union as well. The UAW now represents more than 8,000 casino workers in nine states.