Lincoln was definitely a great moral leader. He carefully noted what people would accept, but he also tried to shape opinion.
Lincoln did take a strong moral stand, and if only for this, he is the greatest president. Lincoln was sure he would lose the 1864 election. It went so far that the head of the Republican National Committee actually asked him to step aside. He was urged to revoke the Emancipation Proclamation.
He said, according to [David] Donald, "But now, if he followed their advice, he would have to do without the help of nearly 200,000 black men in the service of the Union. In that case 'we would be compelled to abandon the war in 3 weeks.' Practical considerations aside, there was the moral issue. How could anybody propose 'to return to slavery the black warriors of Port Hudson and Olustee to their masters to conciliate the South?' "I should be damned in time and eternity for so doing,' he told his visitors (Gov. Randall, and Judge Mills, both from Wisconsin). "The world will know that I keep my faith to friends and enemies, come what will.'"
More from David Donald:
"But there were limits to what Lincoln would do to secure a second term.
He did not even consider canceling or postponing the election. Even had that been constitutionally possible, "the election was a necessity." "We can not have free government without elections," he explained; "and if the rebellion could force us to forego, or postpone a national election, it might fairly claim to have already conquered and ruined us." He did not postpone the September draft call, even though Republican politicians from all across the North entreated him to do so. Because Indiana failed to permit its soldiers to vote in the field, he was entirely willing to furlough Sherman's regiments so that they could go home and vote in the October state elections -but he made a point of telling Sherman, "They need not remain for the Presidential election, but may return to you at once."
Though it was clear that the election was going to be a very close one, Lincoln did not try to increase the Republican electoral vote by rushing the admission of new states like Colorado and Nebraska, both of which would surely have voted for his reelection. On October 31, in accordance with an act of Congress, he did proclaim Nevada a state, but he showed little interest in the legislation admitting the new state. Despite the suspicion of both Democrats and Radicals, he made no effort to force the readmission of Louisiana, Tennessee, and other Southern states, partially reconstructed but still under military control, so that they could cast their electoral votes for him. He reminded a delegation from Tennessee that it was the Congress, not the Chief Executive, that had the power to decide whether a state's electoral votes were to be counted and announced firmly, “Except it be to give protection against violence, I decline to interfere in any way with the presidential election.”
"Lincoln", pp. 539-40 by David H. Donald
Lincoln took strong moral positions on the issues of the day.
He opposed slavery in the 1850's at a time when perhaps 2/3's of whites were against his position.
You can say Lincoln was not a moral leader, but you'll not show that in the record.
Lincoln began preparing the way for black suffrage a year before his death.
The attempt to legitimize blacks as Americans can be seen in these letters he wrote :
Private
General Hunter
Executive Mansion
Washington D.C. April 1, 1863
My dear Sir:
I am glad to see the accounts of your colored force at Jacksonville, Florida. I see the enemy are driving at them fiercely, as is to be expected. It is mportant to the enemy that such a force shall not take shape, and grow, and thrive, in the south; and in precisely the same proportion, it is important to us that it shall. Hence the utmost caution and viglilance is necessary on our part. The enemy will make extra efforts to destroy them; and we should do the same to perserve and increase them.
Yours truly
A. Lincoln
_________________________________________________________
Hon. Andrew Johnson
Executive Mansion,
My dear Sir:
Washington, March 26. 1863.
I am told you have at least thought of raising a negro military force. In my opinion the country now needs no specific thing so much as some man of your ability, and position, to go to this work. When I speak of your position, I mean that of an eminent citizen of a slave-state, and himself a slave- holder. The colored population is the great available and yet unavailed of, force for restoring the Union. The bare sight of fifty thousand armed, and drilled black soldiers on the banks of the Mississippi, would end the rebellion at once. And who doubts that we can present that sight, if we but take hold in earnest? If you have been thinking of it please do not dismiss the thought. Yours truly
------------------------------------------------------------------------------------------------------------
Hon Soc of War
Executive Mansion
Washington
July 21, 1863
My Dear Sir:
I desire that a renewed and vigorous effort be made to raise colored forces along the shores of the Missippi [sic]. Please consult the General-in-chief; and if it is perceived that any acceleration of the matter can be effected, let it be done. I think the evidence is nearly conclusive that Gen. Thomas is one of the best, if not the very best, instruments for this service.
Yours truly
Lincoln also proposed --privately-- to the new governor of Louisiana that the new state constiution include voting rights for blacks. A year later, in April, 1865 he came out --publicly-- for the suffrage for black soldiers, because his great --political-- skill told him that the time was right.
It was a direct result of this speech, and this position, that Booth shot him.
President Lincoln, besides ordering the army (note that this is only a few months after the EP) to use black soldiers more vigorously, made many public speeches to prepare the people for the idea of black suffrage.
"But to be plain, you are dissatisfied with me about the negro. Quite likely there is a difference of opinion between you and myself upon that subject. I certainly wish that all men could be free, while I suppose that you do not. ....peace does not appear as distant as it did. I hope it will come soon, and come to stay; and so come as to worth the keeping in all future time. It will have then been proved that, among free men, there can be no successful appeal from the ballot to the bullet; and that they who take such appeal are sure to lose their case, and pay the cost. And then, there will be some black men, who can remember that, with silent tongue, and clenched teeth, and steady eye, and well-poised bayonet they have helped mankind on to this great consumation; while, I fear, there will be some white ones, unable to forget that, with malignant heart, and deceitful speech, have strove to hinder it. Still let us not be over-sanguine of a speedy final triumph. Let us be quite sober. Let us dilligently apply the means, never doubting that a just God, in his own good time, will give us the rightful result."
8/23/63
"When you give the Negro these rights," he [Lincoln] said, "when you put a gun in his hands, it prophesies something more: it foretells that he is to have the full enjoyment of his liberty and his manhood...By the close of the war, Lincoln was reccomending commissioning black officers in the regiments, and one actually rose to become a major before it was over. At the end of 1863, more than a hundred thousand had enlisted in the United States Colored Troops, and in his message to Congress the president reported, "So far as tested, it is difficult to say they are not as good soldiers as any." When some suggested in August 1864 that the Union ought to offer to help return runaway slaves to their masters as a condition for the South's laying down its arms, Lincoln refused even to consider the question.
"Why should they give their lives for us, with full notice of our purpose to betray them?" he retorted. "Drive back to the support of the rebellion the physical force which the colored people now give, and promise us, and neither the present, or any incoming administration can save the Union." To others he said it even more emphatically. "This is not a question of sentiment or taste, but one of physical force which may be measured and estimated. Keep it and you can save the Union. Throw it away, and the Union goes with it."
--"Lincoln's Men" pp 163-64 by William C. Davis
Lincoln's sense of fairness made him seek to extend the blessings of citizenship to everyone who served under the flag.
His great political skill made him realize that blacks --were--not-- leaving -- he played that card and no one was biting, black or white. That being the case, he knew he had to prepare for the future, and that future involved full rights for blacks.
Abraham Lincoln in 1860.