Pat Kenyon looks over the wine selection at a Costco warehouse store Oct. 31 in Seattle. Whether Costco will be able to sell hard liquor alongside the wine depends on the outcome of a Washington state referendum on Tuesday. (Associated Press)

Pat Kenyon looks over the wine selection at a Costco warehouse store Oct. 31 in Seattle. Whether Costco will be able to sell hard liquor alongside the wine depends on the outcome of a Washington state referendum on Tuesday. (Associated Press)