The election at Green Valley Ranch will be “the largest election ever for the Culinary Union,” said union spokeswoman Bethany Khan in a text. The union and Station Casinos have been embroiled in a yearslong fight over efforts to unionize the properties, with the union lobbing complaints of unfair labor practices at the casino company, which has fired back by painting the union as a bully in its attempts to encourage unionization and accusing it of waging “ a war of corporate terrorism. Workers at the upscale Henderson casino will vote on whether to join the politically powerful Culinary Union in a secret-ballot election conducted by the National Labor Relations Board today and Thursday.