Unconditional Unionist in the context of "1864 National Union National Convention"

The 1864 National Union National Convention was the United States presidential nominating convention of the National Union Party, which met in Baltimore, Maryland on June 7 and 8, 1864. National Union was the name adopted by the main faction of the Republican Party in a coalition with many, if not most, War Democrats and Unconditional Unionists after some Republicans and War Democrats nominated John C. Frémont over Lincoln a few weeks earlier. The National Union renominated Abraham Lincoln for president and Andrew Johnson was nominated for vice president. During the Convention, the party adopted a platform calling for a victorious end in the ongoing Civil War, the eradication of slavery by constitutional amendment and the enforcement of the Emancipation Proclamation.