The delay request comes from casino executives in the wake of a sinking economy, competition in Pennsylvania and New York and plunging casino revenues.
The full ban is scheduled to take effect 18 months after a partial prohibition limited smoking to 25 % of the casino floor.
Gaming executives argue that even the partial ban contributed to a revenue slump last year and this year. The executives say that extending the no smoking signs will make a bad situation even worse, costing millions of dollars in lost revenue and untold jobs.