A UKIP councillor in Portadown has resigned from the party after what he claims is a snub by Nigel Farage - who is the guest speaker at a DUP fundraising event tonight.
David Jones, who was Ukip spokesperson for Northern Ireland, said it was unacceptable he had heard third-hand that his former party leader was attending the DUP event in Ballymena.
The evening is being hosted by DUP MPs Ian Paisley, Sammy Wilson and Paul Girvan.
Entry to the 'Brexit and Beyond' event in the Tullyglass House Hotel costs £15 and is by ticket only.
Mr Jones said he hadn't taken the decision to quit Ukip lightly but he had been "uncomfortable with issues within the party organisation over the past 18 months". He said: "I have no concern at the DUP inviting whoever they wish to speak to them.
"But I was concerned the former leader neglected to inform the local party.
"He had also previously ignored my request to either visit or comment on the issues of the border.
"I felt this was a slight on those members, friends and volunteers who had over the years given freely of time and money to the party."
The prominent Orangeman said he would continue to sit as an independent on Armagh, Banbridge and Craigavon Borough Council.
The DUP said Mr Farage was "one of a series of outside speakers over the last number of years who have been willing to share their policy perspective with our members and supporters".