Social Democratic Party of Enderron leadership spill, May 1979

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← 1967 	10 May 1979 	November 1979 →
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67 caucus votes34 needed for a majority	67 caucus votes34 needed for a majority	67 caucus votes34 needed for a majority
 	 	
 	 	
Candidate 	William Watt 	Calvin Rhinehart
Caucus vote 	36 	31
Percentage 	53.7% 	46.3%
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Leader before election 	Leader before election 	Elected Leader
Calvin Rhinehart 	Calvin Rhinehart 	William Watt
A leadership spill in the Social Democratic Party of Enderron was held on 10 May 1979. Incumbent leader and Prime Minister Calvin Rhinehart was narrowly defeated by Treasurer William Watt.