Alberta, the major oil-producing province of Canada, is one step closer to a referendum on independence after leaders of a separatist group said they¡¯ve gathered more than enough signatures to force a vote.

The group, Stay Free Alberta, had until May 2 to collect roughly 178,000 signatures on their petition for a provincewide vote. On Monday, organizers said they?collected more than 301,000 signatures to submit to Elections Alberta, the independent elections agency.

If the referendum goes ahead, it would ask: ¡°Do you agree that the Province of Alberta should cease to be part of Canada to become an independent state?¡± But there are still a number of obstacles.