The Nebraska horse racing industry, which has struggled for years to offer competitive purses, got a major boost Tuesday when voters overwhelmingly approved three constitutional amendments that legalize casinos at the state's racetracks. In other gambling related matters on the ballot across the country Tuesday, Marylanders voted in favor of legalizing sports betting in the state and voters in South Dakota approved sports betting, which would be restricted to the town of Deadwood, which already has a casino. In Louisiana, 55 of 64 parishes approved sports betting, including the four...