On the other hand, her supporters pointed to one episode of the show where there had been a glitch in the Aliant telephone system which kept much of New Brunswick from voting that night, yet she still placed in the top half.
She arrived at the festival by helicopter and sang three songs, including her signature theme, Bring It On Home.
The University of New Brunswick's Aitken Centre was the venue for this concert in which Casey was backed up by the Halifax band, Shaydid.
She sang many of the songs she had performed on Canadian Idol, including Stevie Wonder's Heaven Help Us All, The Guess Who's Timeless Love, The Pretenders' I'll Stand By You, and Sam Cooke's Bring It On Home.
LeBlanc has formed a group called Braided with fellow former season 3 contestants Ashley Leitao and Amber Fleury.
She recorded a song called "Weather the Storm" with New Brunswick artist Dwane Drost, with proceeds to support cancer survivors.