The Ethics and Sustainability Party has lodged a party registration application with the Tasmanian Electoral Commission.

On its website the party lists two objectives: to oppose the 2007 fast-track assessment of the pulp mill and to stand candidates at the March 20 state election.

Interim vice-president of communications Peter Wilson said the party would stand candidates in a number of electorates for the election, and not just Bass, if the party was officially registered in time.

Mr Wilson said the Ethics and Sustainability Party - which had 250 members - was "not an anti-pulp mill party but an anti-fast-track assessment party".

"We see this as more than just a pulp mill issue," Mr Wilson said.

"There are quite a few issues relating to ethics which have dogged the Bartlett Government and a lot of people would regard the state Liberal Party as not really having done a great job in that area either."

Mr Wilson said his party's policies would attract voters who swing between Liberal and Labor but do not vote for the Greens.

"We are politically middle of the road," he said.

"Both Liberal and Labor parties could potentially benefit from our support in a post-March 20 government, depending on concessions each might agree to make regarding conducting a full, independent assessment of the proposed Gunns Tamar Valley pulp mill."