sentences:  Seymour made two unsuccessful attempts to return to the governorship in 1860 and 1863 and unsuccessfully sought the Democratic nomination for President of the United States at the 1864 Democratic National Convention, losing to Civil War general George B. McClellan.Seymour died of typhoid fever, in Hartford, Connecticut on September 3, 1868 (age 60 years, 340 days).He is interred at Cedar Hill Cemetery.