^Treacy served as Ceann Comhairle in the 20th Dáil from 1973 to 1977, and was returned automatically at the 1977 election. He lost the Labour party whip in February 1985.
^Treacy served as Ceann Comhairle in the 25th, 26th and 27th Dáil from 1987 to 1997, and was returned automatically at the 1989 and 1992 elections.
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