Idaho Lottery Director Jeff Anderson told budget writers Friday the emergence of Wyoming on the lottery scene could reduce Idaho's sales by up to $3 million in fiscal year 2015.
Wyoming Gov. Matt Mead signed a bill last March clearing the way for its lottery.
It'll likely start in June.
Until now, the absence of a Wyoming lottery has benefited Idaho as ticket-seeking residents slip across the border in hopes of striking it rich.
Utah, to Idaho's south, also doesn't have its own lottery.
But Anderson expects some Utah residents will now bypass Idaho for Wyoming to buy Powerball or Mega Millions tickets.