Art O'Leary, chief executive officer of the Electoral Commission joins us explain how the changes were decided on and what factors were taken into consideration. We're also joined by our Political Reporter Jane Matthews, Deputy Editor Christine Bohan, and Assistant News Editor Rónán Duffy to dissect the results and take a look at the political ramifications.The Explainer is brought to you by The Journal. Providing open access to valuable journalism in Ireland has been the aim of The Journal for a decade. You can contribute to ensure we can keep questioning, investigating, debunking, explaining and informing at www.thejournal.ie/contribute/