Ulster Unionist leader, Mr Trimble, today held out the possibility of another election in Northern Ireland in the near future.
Mr Trimble said the election result was likely to end in a "stalemate" and that he was not ruling out the possibility of doing it again in six months time.
He said this was unfortunately the case where there was one party "in a position to block progress", referring to the DUP.
Earlier Mr Trimble vowed to fight on today despite his party suffering heavy blows in the Northern Ireland Assembly elections.
With the hardline Democratic Unionists making big gains and internal critic Mr Jeffrey Donaldson appearing to call for his head, Mr Trimble predicted the UUP vote would hold up at the end of counting.
Mr Donaldson today dismissed accusations that he was out-of-step with his own Ulster Unionist Party saying, "If I am getting it so wrong, why is the electorate supporting me?"
"They want change," he said.
Asked if he would challenge Mr Trimble for the leadership of UUP, he said: "It is time for change and if a vacancy arises I will consider putting my name forward".
As Mr Trimble arrived in Banbridge, Co Down, where he was re-elected, the Ulster Unionist leader declared: "I have every intention of continuing as leader. I know there's an important job to be done and I have demonstrated over the last eight years there's more than a little stickability here."
Even though Mr Trimble topped the poll in his Upper Bann constituency, elsewhere his party colleagues were fairing much worse than the Reverend Ian Paisley's DUP, which opposes the Belfast Agreement.
But amid claims that his rivals would emerge as the largest unionist party in the Stormont Assembly, Mr Trimble insisted: "We will end up with between 26 and 28 seats. I have every expectation it will be at the higher end of that and then that's a different ball game."
The DUP's Mr Gregory Campbell insisted London and Dublin would have to admit Belfast Agreement was no longer workable.
The East Derry MLA said as the two Prime Ministers prepared to meet in Cardiff: "Both of them will have to face up to the same reality as David Trimble. "They will have to wake up and smell the roses. There is a need for a new settlement which can command the support of both unionists and nationalists.
"The Belfast Agreement clearly has been rejected by Unionists and by their own rules, Mr Blair and Mr Ahern must now admit that there is a need for a new settlement. It is not rocket science," he said.
Mr Trimble condemned at the Democratic Unionists for not attempting to move the Northern Ireland peace process forward.
He said: "Part of the problem is too many unionists, particularly the DUP, are still mired in the past."
He also claimed unionist extremists could dominate if more moderate voters continue to stay at home. "This is not the time for defeatism. We will not get through this by glib phrases about new agreements."
The UUP leader rejected suggestions that some of his party may jump ship to join their rivals.