The Councillor at the centre of the Red Sky debacle had announced that she will leave the DUP along with her husband, John, who is also a Councillor in Lisburn.
The news was broken by BBC Spotlight who will be airing an interview with Cllr Palmer tonight on BBC One at 10:45pm.
Here is some of the back story from the BBC;
In July 2013, Mrs Palmer told Spotlight that she had been ordered by a DUP special adviser, Stephen Brimstone, to change the way she intended to vote at a Housing Executive board meeting called to terminate a contract with the maintenance firm, Red Sky.
The social development committee at Stormont launched an inquiry that was told by Mrs Palmer that she had rejected five draft apologies from Mr Brimstone and DUP leader Peter Robinson.
But she clashed with DUP committee member Sammy Wilson who accused her of changing her story.
The various hearings over the issue made headline news, but it was the famous clash between Stephen Brimstone and TUV leader, Jim Allister that left a lasting memory.
Obviously the disciplinary hearings pushed Palmer over the edge. Tonight’s Spotlight should be interesting viewing.