query: What are the parties, votes and percentage of votes by Valéry Giscard d'Estaing and François Mitterrand in 1981 French presidential election?
answer: In the 1981 French presidential election, Mitterrand and his Socialist Party received 51.76% of the vote, while Giscard and his Union for French Democracy trailed with about 48.24%, a margin of 1,065,956 votes.