Discussions about a merger between Eventia and IVCA started more than a year ago, and the proposal and ballot papers have now been circulated for members’ votes.
The proposal, which was originally due to be put for vote in April, provides members with details of the key aims of a merger and the advantages of a new organisation.
A statement from IVCA claims that "for IVCA members there is the clear advantage that many Eventia members are potential clients".
According to Eventia, the new association would represent an industry worth £40bn to the UK economy.
Simon Hughes, chairman of Eventia, said: "The original idea for this came from one of our senior advisory council meetings, where creating a stronger, more unified voice, was felt to be critical for the industry going forward.
"The proposal and ballot finally gives our membership the chance to decide on the merits of the case.
"Both boards have spent considerable time and effort developing the opportunity and support the merger opportunity. I'm looking forward to the results, as it has been a long time coming."
The results of the ballots will be announced on Thursday 27 June.
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