The WikiLeaks political party has announced plans to field Senate candidates in New South Wales and Western Australia, in addition to founder Julian Assange's bid for a Victorian Senate seat.

The party's campaign director, Greg Barns, says WikiLeaks has secured what he describes as "high quality" candidates in those states, which will be announced at a later date.

He says the party will contest Senate races in other states and territories if it can find suitable candidates, however he refused to say whether he had begun negotiating with other parties on all-important preference deals.

WikiLeaks says it has already exceeded the 500 members it needs to register as a political party ahead of September's federal election and is on track to complete the process by the mid-May deadline.

Mr Assange remains in the Ecuadorian embassy in London.

Mr Barns says if he were elected but remained unable to return, another WikiLeaks candidate could fill his spot.