Stuart Nash is ditching Parliament with his head held high, once again hitting out at the legal system.

The disgraced former Police Minister found himself in hot water, after revelations he'd phoned the Police Commissioner, urging him to advocate for a harsher sentence.

In his valedictory speech last night, Nash defended the decision that got him ousted from Caucus.

Nash told Mike Hosking he believes judges should front up about their decisions more.

He says there needs to be a bit of transparency around how judges make their sentencing decisions.

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