Presidential candidate Brian Godfrey has accused the RIBA of 'moving the goalposts because I am such a threat'.
The small practitioner from Dorset said he was furious about changes to the election timetable that have left him with 'three weeks for hustings rather than five', due to a booked holiday.
He had requested that the election timing be changed but at a council meeting 'not one of the candidates in council was prepared to back me'.
Godfrey also attacked procedures that forced him to change manifesto statements about the number of elected councillors on RIBA committees.
'I honestly believe the members' interests should be put first, as we are the institute, while the executive comes and goes, ' he said.
'I am seen as such a threat, the goalposts are continually changed.'
However, Godfrey's fellow candidates refused to be drawn. 'I want to talk about the positive aspects of the candidacies and not get into criticising the negatives, ' Richard Saxon said.