Regardless of Mr. Christie's decision, gambling experts say momentum is growing behind states' efforts to legalize online gambling for their own residents, known as intrastate gambling. Last week, Iowa lawmakers introduced a bill to legalize online poker, and California and Florida are among other states considering similar bills.
Once one state passes an online-gambling law, "you will see other states go 'aha.' It will spread very rapidly," said Anthony Cabot, an expert in Internet gambling law.
The debates over online gambling come as states scramble to balance their budgets in the face of yawning deficits.