Liberal Democrats MP David Limbrick is leading the campaign to keep Denyer locked up.(Nine)
Liberal Democrats MP David Limbrick is pushing for the government to intervene and ensure the killer remains locked up.
"If Denyer did get released one day and we had (an) opportunity to stop that and did nothing, how could we live with ourselves?" he said.
Mr Limbrick was the boyfriend of Ms Russell at the time of her death.
He said the pain of her loss has stayed with him.
"It feels like yesterday for all of us ... you learn to live but it never goes away, the pain," he said.