Vic Labor dumps 180 for branch-stacking

Almost 200 people have been kicked out of the Victorian Labor party after a branch stacking investigation.

Labor kicked out around 180 members on Thursday night after the investigation uncovered people who had not paid for their own membership.

Another 250 are facing dispute proceedings about why someone else paid for them.

The investigation also led to the leaking of thousands of private credit card records to the media in what the party considers a major privacy breach.

Labor lawyers have threatened legal action against a man who allegedly leaked the private financial data party database.

They have ordered Eric Dearricott, a long-time anti branch stacking activist within the ALP, to destroy the financial records he obtained from the Commonwealth Bank's eWay system.

Some of the records were leaked to The Age newspaper, which ran articles alleging a number of key Labor figures linked to Bill Shorten had their memberships paid for by anonymous pre-paid gift cards.

Plumbers Union boss Earl Setches was named as one of those members - he denied it when contacted by AAP and the internal Labor investigation backed him up.

Mr Setches' lawyers have also launched legal action in a bid to find out who sought out his financial details on the Labor database.

A Labor figure said the branch stacking investigation had mostly found low level breaches of ALP rules, not systematic branch stacking.