Career
He served as the Minister of Public Administration in Louis De Geer’s first cabinet (1856–1860). In 1867, he was elected to be first deputy speaker of the Upper House of the Swedish Parliament. Almqvist served as Minister for Justice in Louis De Geer’s second cabinet (1879–1880).
He was made Knight of the Order of the Seraphim in 1882.
On August 26, 1884 he died at the Algö Estate on Selaön. Ludvig married Sophie Antoinette Eugenie Björkman in 1851.
Their daughter, Carolina "Lina" Almqvist, married Erik Gustaf Boström, who went on to become Prime Minister of Sweden.