At the 1992 general election, he stood again in Dublin South-Central, and in Labour's "Spring Tide" surge at that election, Upton topped the poll with nearly 12,000 first-preference votes, a remarkable 1.48 quotas.[2][4] He was re-elected at the 1997 general election with a considerably reduced vote.[5]
He died suddenly of a heart attack on 22 February 1999 at the UCD veterinary school, where he was still an occasional lecturer, and was survived by his wife and their four children.[6] Politicians of all parties paid glowing tributes to him an outspoken but "erudite and incisive" contributions to politics and to Irish culture.[7][8]
^O'Connell served as Ceann Comhairle in the 22nd and 23rd Dáil from 1981 to 1983 and was returned automatically at the February 1982 and November 1982 general elections. He joined Fianna Fáil in January 1985.