The Academy of Television Arts & Sciences has announced voting changes that would appear to enhance the chances of actors who appear on low-rated shows to receive Emmy nominations. Under new rules the nominees for best actors and actresses in comedy and drama series -- as well as the shows themselves -- will be selected by a two-tier system. Initially all of the members of the academy will cast ballots for the nominees, then a blue-ribbon panel will select the five nominees from the top vote-getters. Academy CEO Dick Askin said Tuesday that the new voting process "significantly increases the potential for the widest and most diverse selection of nominees as possible."