Representatives of two major conventions that annually rank among the top five shows in Las Vegas by attendance and are expected to produce a non-gaming economic impact of more than $1.4 billion over five years have signed new contracts with the Las Vegas Convention and Visitors Authority. SEMA, the Specialty Equipment Market Association, and MAGIC, Men’s Apparel Guild in California, signed deals that will keep them at the Las Vegas Convention Center for five and three years, respectively.