Jean-Louis Leduc
He was re-elected in the 1980 election , but left national politics after his defeat to Louis Plamondon of the Progressive Conservative party in the 1984 federal election . 
<triplet> 1980 election <subj> 1984 federal election <obj> followed by <triplet> Louis Plamondon <subj> Progressive Conservative party <obj> member of political party <triplet> 1984 federal election <subj> 1980 election <obj> follows