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![]() Parish results Johnston: 50–60% 60–70% 70–80% 80–90% Jenkins: 50-60% | |||||||||||||||||
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Elections in Louisiana |
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The open primary election for the 1978 United States Senate election in Louisiana was held on September 16, 1978.
Incumbent Senator J. Bennett Johnston won the election with 59.40% of the vote and was declared elected by a majority, dispelling the need for a general election in November.