MARTHA RADDATZ: Good evening, and welcome to the first and only vice presidential debate of 2012, sponsored by the Commission on Presidential Debates. I’m Martha Raddatz of ABC News, and I am honored...
JIM LEHRER: Good evening from the Magness Arena at the University of Denver in Denver, Colorado. I'm Jim Lehrer of the PBS NewsHour, and I welcome you to the first of the 2012 presidential debates...