Kammala wannan jumla: A shekara ta 2003, Barbour ya zama gwamnan na biyu na Mississippi tun lokacin da aka sake gina shi lokacin da ya ci nasara da dan Democrat mai suna Ronnie Musgrove. A matsayinsa na gwamna ya kula da martani na jiharsa ga Hurricane Katrina da kuma
2010 Ruwan mai na Deepwater Horizon, bala'o'i biyu da suka fi cutarwa a jihar tun bayan ambaliyar Kogin Mississippi a 1927. An sa ran Barbour zai zama dan takarar shugaban kasa a shekarar 2012, amma ya sanar da cewa ba zai yi takara ba a watan Afrilun 2011.