Lalor was elected to
Dáil Éireann on his first attempt at the
1961 general election as a
Fianna Fáil TD for
Laois–Offaly in the
17th Dáil. In 1965, he was appointed
Parliamentary Secretary to the
Minister for Agriculture. The following year, Lalor became Parliamentary Secretary to the Minister for
Transport and Power and
Posts and Telegraphs. Following the
1969 election, Lalor joined the cabinet of
Jack Lynch as Minister for Posts and Telegraphs. In the cabinet reshuffle that took place following the
Arms Crisis in 1970, he took over the
Industry and Commerce portfolio, serving in that position until the
1973 general election, when a
Fine Gael–
Labour Party coalition took power. Fianna Fáil was re-elected in a landslide victory at the
1977 general election and Lalor became
Government Chief Whip and
Parliamentary Secretary to the Minister for Defence. In 1979, he was elected to the
European Parliament for the
Leinster constituency He was re-elected to the European Parliament in 1984 and 1989, before retiring from politics in 1994. During his time as a member of the European Parliament, he was vice-chair of the parliamentary grouping the
European Progressive Democrats and its successor the
European Democratic Alliance. He was also a
Vice-President of the European Parliament from 1982 to 1987. == Personal life ==