There are higher hopes than in the past for gambling expansion legislation, although some are questioning the revenue impact of adding casinos in six locations. Although the grand bargain was derailed this past week, the casinos plan did get the endorsement of the Senate. The state has 10 profitable casinos. But the legislation recognizes competition would cut into existing riverboats' profit. So it would cut the tax rate on casino revenue significantly. One analysis found the expansion would only increase tax profits by only $87 million a year.