HARRISBURG — The state House of Representatives began debate Monday night on a liquor privatization bill, setting the stage for a historic vote on whether to get Pennsylvania out of the business of selling wine and liquor.The House debated for three hours whether to give preliminary approval to a revamped plan to sell off the state's 600-plus Wine and Spirits Stores. The chamber is expected to resume discussion on the bill Tuesday. The new proposal comes with a twist: Not only would it privatize wine and liquor sales, it would also change the way beer, already a privately run industry, is sold in Pennsylvania.