In France in 1852, voters were asked whether they approved of the re-establishment of the Empire in the person of Louis Napoléon Bonaparte,  the only president of what republic?
French Second Empire referendum, 1852 A referendum on re-establishing the Empire was held in France on 21 and 22 November 1852. Voters were asked whether they approved of the re-establishment of the Empire in the person of Louis Napoléon Bonaparte and family. It was approved by 96.9% of voters with a 79.8% turnout.
State of Vietnam referendum, 1955 The State of Vietnam referendum of 1955 determined the future form of government of the State of Vietnam, the nation that was to become the Republic of Vietnam (widely known as South Vietnam). It was contested by Prime Minister Ngô Đình Diệm, who proposed a republic, and former emperor Bảo Đại. Bảo Đại had abdicated as emperor in 1945 and at the time of the referendum held the title of head of state. Though published counts showed Diệm winning the election with 98.2% of the vote, the referendum was widely marred by electoral fraud. In the capital, Saigon, Diệm was credited with more than 600,000 votes, although only 450,000 people were on the electoral roll. He accumulated tallies in excess of 90% of the registered voters, even in rural regions where opposition groups prevented voting.