She won Liberal National Party selection for the newly created federal seat of Wright in November 2009, but subsequently lost endorsement following allegations she mismanaged the funds of a 65-year-old man.

[5] Ban's grandfather was an Eastern European Jewish Holocaust survivor who moved the family to Israel in 1976 to escape communism.

[6] Ban was first elected as Councillor for Division 4 in the (now defunct) Shire of Beaudesert on 27 March 2004 at the age of 26, when she significantly out-polled her four male opponents.

She was chairperson of the Shire's Planning and Development Committee from April 2004 to December 2005, when she was removed from the post, in a move spearheaded by Councillor John Fronis, over her opposition to the State's decision to designate the North McLean Enterprise Precinct in the South East Queensland Regional Plan, which would have placed heavy industry in the middle of her rural-residential division.

[14] In late 2008, Ban formed an alliance with Sean Black, the only other rural-based councillor, and together they advocated strongly for their similar constituencies.

After questions were raised by Queensland’s Adult Guardian about Ban's administration of an elderly man’s estate, the Liberal National Party revoked its endorsement of her as the candidate for the federal division of Wright on 7 June 2010.

Ban voluntarily surrendered her power of attorney on 2 July 2010, after which proceedings in the Queensland Civil and Administrative Tribunal were ceased.

[18] Ban is an anti-pokies campaigner and continues to advocate for the reduction in the number of gaming machines within the Logan City local government area.

[24][25] In November 2011, Ban (then known as Hajnal Black) faced criminal charges for allegedly breaching local government financial disclosure laws.

She travelled to the Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics in Kurgan, Russia where she was operated on by Dr Constantine Novikov.

[36] Since that time Ban has received worldwide attention for her surgery[37] and has been a commentator on issues from sex discrimination to extra airline charges.