actively, but he withdrew in March when a slew of Republican officials, including some within the state of Ohio upon whom Chase's campaign depended, endorsed Lincoln for re-nomination. Lincoln was still popular with most members of the Republican Party, and the National Union Party nominated him for a second term as president at their convention in Baltimore, Maryland, on June 7–8, 1864. The party platform included these goals: "pursuit of the war, until the Confederacy surrendered unconditionally; a constitutional amendment for the abolition of slavery; aid to disabled Union veterans; continued European neutrality; enforcement of the Monroe Doctrine; encouragement of immigration; and construction of a transcontinental railroad." It also praised the use of black troops and Lincoln's management of the war. With incumbent vice president Hannibal Hamlin remaining indifferent about the prospect of a second term in office, Andrew Johnson, the former senator from and current military governor of Tennessee, was named as Lincoln's vice presidential running-mate. He had been governor of Tennessee from 1853 to 1857 and was elected by the legislature to the Senate in 1857. In his congressional service, he sought passage of the Homestead Bill which was enacted soon after he left his Senate seat in 1862. When the Southern slave states, including Tennessee, seceded, he remained firmly with the Union. He was the only sitting senator from a Confederate state who did not resign his seat upon learning of his state's secession. In 1862, Lincoln appointed him as military governor of Tennessee after most of it had been retaken. In 1864, Johnson was a logical choice as running mate for Lincoln, who wished to send a message of national unity in his re-election campaign, especially to ensure the electoral votes of the border states. Others who were considered for the nomination, at one point or another, were former Senator Daniel Dickinson, Major General Benjamin Butler, Major General William Rosecrans, Joseph Holt, and former Treasury Secretary and Senator John Dix. Democratic Party nomination Democratic presidential candidates: George B. McClellan, General from New Jersey Thomas H. Seymour, Former Governor of Connecticut Democratic Party candidates gallery Democratic Party vice presidential candidates gallery The Democratic Party was bitterly split between War Democrats and Peace Democrats, a group further divided among competing factions. Moderate Peace Democrats who supported the war against the Confederacy, such as Horatio Seymour, were preaching the wisdom of a negotiated peace. After the Union victory at