When Marylanders voted to legalize table games and allow a sixth casino in Prince George’s County in 2012, part of what they approved was a reduction in the tax rate Maryland’s existing casinos would pay once the new MGM casino came on line. Because of increased new competition, the Horseshoe Casino in Baltimore would get an immediate break of 7 percent, and Maryland Live would see its slots taxes reduced by 8 percent. (Some of Maryland’s other casinos, while more distant from National Harbor and thus less susceptible to a loss in market share because of MGM, have nonetheless seen adjustments in their tax rates over the years, too.) That’s part of the reason why the vast majority of the new revenue to be generated by the gambling expansion was projected to go to the casinos, not the state.