 All of the states with land north of the parallel, except Virginia, stayed in the Union, although Kentucky and Missouri had Confederate legislatures that were elected in parallel with their regular legislatures.Also Maryland, another slave state, was occupied by the Union Army under the commands of President Abraham Lincoln, and its legislature was thus pressured into voting not to secede.Naturally, Lincoln and the remaining members of the U.S. Congress wanted Maryland to stay in the Union in order to prevent the national capital city of Washington, D.C. from being surrounded by Confederate states, and hence being cut off from the rest of the Union.