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?
Napoleon III Louis-Napoléon Bonaparte (born Charles-Louis Napoléon Bonaparte; 20 April 1808 – 9 January 1873) was the President of France from 1848 to 1852 and, as Napoleon III, the Emperor of the French from 1852 to 1870. He was the only president of the French Second Republic and the head of the Second French Empire.
Hundred Days The Hundred Days (French: "les Cent-Jours" ] ) marked the period between Napoleon's return from exile on the island of Elba to Paris on20 March 1815 and the second restoration of King Louis XVIII on 8 July 1815 (a period of 111 days). This period saw the War of the Seventh Coalition, and includes the Waterloo Campaign, the Neapolitan War as well as several other minor campaigns. The phrase "les Cent Jours" (the hundred days) was first used by the prefect of Paris, Gaspard, comte de Chabrol, in his speech welcoming the king back to Paris on 8 July.