The leader of the B.C. group rallying against the upcoming Harmonized Sales Tax says they have collected enough signatures to force the government to reconsider the controversial tax.

Fight HST leader and former B.C. Premier Bill Vander Zalm told CTV News Friday that his group has reached the 10 per cent threshold in all 85 electoral ridings in the province.

The group took the traditionally Liberal stronghold of Richmond East on Wednesday and hoped to take the 85th and final B.C. riding of Vancouver-Langara by the weekend.

Speaking to CTV News earlier this week, Vander Zalm called on B.C. Premier Gordon Campbell to immediately repeal the tax.

"This is a referendum, and the government doesn't need to spend another $20 million postponing the thing. They can deal with it," he said.

But Gordon Campbell maintains the tax will bolster B.C.'s economy by creating "tens of thousands" of new jobs and billions of dollars in new investment.

The petition will be submitted on July 5 and could lead to a number of possible scenarios, including a review in the legislature, go to a referendum – or even trigger a recall campaign.