QUEBEC - Quebec's most popular political party has officially joined forces with another, smaller partythe Action democratique du Quebec.

Members of the ADQ voted to approve the merger with the new Coalition For Quebec's Future, which promises to set aside the debate on sovereignty.

The ADQ has been around for two decades but has struggled in recent years.

The merger means the Coalition gets the ADQ's four seats in the Quebec legislature.

An agreement in principle was reached between the parties in December but ADQ members had the final say in a mail-in ballot.

Just over 70 per cent of those who voted approved the deal.