Lincoln was asked by letter to address the impending vote of constitutional ratification in Maryland. Everyone knew where he stood.

10/10/1864 ...A convention of Maryland has framed a new constitution for the state; a public meeting is called for this evening, at Baltimore, to aid in securing its ratification by the people; and you ask a word from me, for the occasion. I presume the only feature of the instrument, about which there is serious controversy is that which provides for the extinction of slavery. It needs not to be a secret, and I presume it is no secret, that I wish success to this provision. I desire it on every consideration. I wish all men to be free. I wish the material prosperity of the already free which I feel sure the extinction of slavery would bring. I wish to see, in process of disappearing, that only thing which ever could bring this nation to civil war. I attempt no argument. Argument upon the question is already exhausted by the abler, better informed, and more immediately sons of Maryland herself. I only add that I shall be gratified exceedingly if the good people of the state shall, by their votes, ratify the new constitution... LL 622