Striking California wine workers are voting again on a contract they overwhelmingly rejected last week, after an ultimatum Monday by employers that they will begin hiring permanent, nonunion replacements unless the strikers return to work. Final results of the new vote, by about 2,200 members of the Winery, Distillery and Allied Workers Union, will not be tallied until Thursday night, said Robert Fogg, president of Local 186. Union leaders gave no recommendation to the rank and file on whether to accept or reject the offer, Fogg said. The contract includes a 50-cent an hour wage cut and reductions in health and pension benefits. The struck wineries, which include Gallo and Almaden, produce more than half of California's wine.