The DUP's executive will meet later to decide on its future in power-sharing at Stormont.
The special meeting will give party officers the authority to decide on its future stance, and comes as it's involvement in devolved government has been placed in doubt over the Brexit protocol.
The party wants the protocol - which creates a trade barrier down the Irish Sea - radically changed, and has set a November deadline for that to happen.
Professor of British and Irish politics at the University of Liverpool, Jon Tonge, says today's meeting could be significant.
"Well the whole future of power sharing may be at stake here, because if Stormont collapses it may never be put back.
"If the DUP walks out of the institutions and power sharing collapses, there will be an election.
"The question then is would the DUP come back into power sharing when Sinn Féin is very very likely to emerge as the largest party in the north."
