Mark Ballard is a former Member of the Scottish Parliament for the Lothians region between 2003 and 2007, representing the Scottish Green Party and was Lord Rector of the University of Edinburgh between 2006 and 2009. He is now Assistant Director of Barnardo's in Scotland and was co-convener of the Edinburgh Green Party from 2007-10. Wikipedia*
On the C-SPAN Networks:
Mark Ballard has one video in the C-SPAN Video Library; the first appearance was a 2010 Call-In.