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20 seats on Monaghan County Council | ||||||||||||||||||||||||||||||||||||||||
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 Map showing the area of Monaghan County Council | ||||||||||||||||||||||||||||||||||||||||
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An election to Monaghan County Council took place on 5 June 2009 as part of that year's Irish local elections. 20 councillors were elected from four local electoral areas (LEAs) for a five-year term of office on the electoral system of proportional representation by means of the single transferable vote (PR-STV).