Amanda Banks has emerged as an extremely good wife to John Banks with her "obsessive" detective work turning up crucial evidence which led to the former Act Leader's electoral fraud conviction being overturned today. Mr Banks was today celebrating after the Court of Appeal overturned his conviction and ordered a new trial. He was convicted in the High Court earlier this year after failing to disclose donations from Kim Dotcom to his Auckland Mayoralty campaign in 2010. Mr Banks appealed, introducing affidavits from two US-based businessmen who he says were at the same lunch at which Mr Dotcom claimed donations were discussed. The pair - David Schaeffer and Jeffery Karnes - both said donations were not discussed at that lunch.