Guy Barnett was defeated at the 2010 election

http://en.wikipedia.org/wiki/Guy_Barnett_%28Australian_politician%29
Update retired Senators on 30 June 2014

http://www.aph.gov.au/Senators_and_Members/Senators/Senators_retiring
Add new Senators & parties from the 2013 election

http://www.aph.gov.au/Senators_and_Members/Senators/Senators-elect
Alan Ferguson retired at the 2010 election

http://parlinfo.aph.gov.au/parlInfo/search/display/display.w3p;query=%28Id:handbook/allmps/ep5%29;rec=0;
Steve Fielding was defeated at the 2010 election

https://en.wikipedia.org/wiki/Steve_Fielding
Michael Forshaw retired at the 2010 election

https://en.wikipedia.org/wiki/Michael_Forshaw
Annette Hurley retired at the 2010 election

http://www.aph.gov.au/Senators_and_Members/Parliamentarian?MPID=e4u
Steve Hutchins was defeated at the 2010 election

http://parlinfo.aph.gov.au/parlInfo/search/display/display.w3p;query=%28Id:handbook/allmps/84p%29;rec=0;
Julian McGauran was defeated at the 2010 elections

http://www.aph.gov.au/Senators_and_Members/Parliamentarian?MPID=wh4
Nick Minchin retired at the 2010 elections

https://en.wikipedia.org/wiki/Nick_Minchin
Judith Troeth retired at the 2010 election

https://en.wikipedia.org/wiki/Judith_Troeth
Russell Trood was defeated at the 2010 elections

http://parlinfo.aph.gov.au/parlInfo/search/display/display.w3p;query=%28Id:handbook/allmps/e6a%29;rec=0;
Dana Wortley was defeated at the 2010 election

http://parlinfo.aph.gov.au/parlInfo/search/display/display.w3p;query=Id%3A%22handbook%2Fallmps%2FE6C%22;querytype=;rec=0