The Republican presidential hopefuls debate Tuesday night in Las Vegas. We'll get a preview of the questions they're likely to be asked. Also, Mitt Romney's Mormonism is drawing more attention. We'll hear from one religion writer who says his nomination would be a game changer for the young religion. Sanden Totten reports on some lost film footage of Skid Row from the 1940’s. Local historians say the found footage offers a rare glimpse at a place and people that was typically ignored by Hollywood’s cameras. Also, it's "New Music Tuesday". Critic Drew Tewksbury reviews new releases from Mayer Hawthorne, M83 and Noah and the Megafauna.