The casino gaming industry is doubling down on political events next week, looking to flex its economic muscle at the first Democratic presidential primary debate in Las Vegas on Tuesday and at an event in Wheat Ridge ahead of the next Republican debate in Boulder at the end of the month. According to the industry lobbying group American Gaming Association, U.S. Sen. Cory Gardner and U.S. Rep. Scott Tipton, both Republicans, will participate in a roundtable on gaming issues Wednesday at Gaming Laboratories International in Wheat Ridge.