The DUP leader, the Rev Ian Paisley, yesterday urged Northern voters to register their anger at the Belfast Agreement by voting for him in the European elections.
At the publication of his party's election manifesto, Dr Paisley said he would continue to challenge the agreement, despite criticism from other unionists and sections of the press.
The North Antrim MP left the Ulster Hospital three days ago after receiving treatment for an acute kidney infection. Responding to inquiries about his health, he said speculation that he had suffered a stroke was "lies".
"As you can see, I haven't died. The DUP and its leader don't run away."
He said unionists had expressed to him their abhorrence at developments since the signing of the Belfast Agreement - paramilitary prisoners being released, proposed reforms of the RUC, the continued existence of the Parades Commission and the setting up of cross-Border bodies.
"On the doors, I have found this - people are enraged at the loosing on to our streets of convicted terrorists. Trimble and the Ulster Unionists got that through. They were the people who negotiated it." Dr Paisley said the possibility of Sinn Fein getting positions of power in the executive had infuriated his followers.
"If there is one thing that has maddened the unionist people that I have been talking to on my canvass, it is the presentation of Mr McGuinness at Dublin as a coming government minister in Northern Ireland."
He said people were feeling "absolutely exasperated" about what could happen to the RUC. The Belfast Agreement was "a blueprint for its utter destruction eventually".
He described the Parades Commission as "a total and absolute disaster".