He's a perennial candidate and the only option Mississippi voters will have other than Thad Cochran or Travis Childers.
A member of the Reform Party, which has largely disappeared on the national level since the 2000 presidential election, O'Hara's views include
favoring the execution of abortion doctors and sympathizing with Samuel Bowers, a KKK member who murdered several civil rights activists in the 1960s.
His electoral history is below...
1991 - MS Governor - Reform Party - 1.58%
2000 - US Senate - Reform Party - 0.74%
2002 - US Senate - Reform Party - 15.42% (only candidate on the ballot besides Cochran)
2003 - MS Governor - Reform Party - 0.46%
2007 - MS State Treasurer - Democratic Party - 39.47%
2008 - Democratic Party Primary for US Senate - 34.2%
2010 - Democratic Party Primary for MS 3rd congressional district - 18.3%
2011 - MS State Treasurer - Reform Party - 3.01%
2012 - US Senate - Reform Party - 1.06%