WHY IT MATTERS: Issues at stake in election - Article Photos 25/31

In this Oct. 20, 2012, photo, election workers Elena Soto, left, and Dave Carlson post early voting signs for a polling place along Frank Sinatra Blvd. behind The Mirage Hotel-Casino in Las Vegas. The nation's complexion is rapidly changing. A more racially and ethnically diverse population is rising so that, perhaps within three decades, whites will no longer be the majority. That means shifts in political power, the risk of intensified racial tensions and also the opportunity to forge a multiracial society unlike anything in America's past. (AP Photo/Julie Jacobson)