Time would fail me to dwell on the perpetual influence, growing with time, which the Slave Power has exerted from the foundation of the government. In the earlier periods of our history it was moderate and reserved. The spirit of the founders still prevailed. But with the advance of years, and as these early champions passed from the scene, it became more audacious, aggressive, and tyrannical, till at last it obtained the control of the government, and caused it to be administered, not in the spirit of Freedom, but in the spirit of Slavery. Yes! the government of the United States is now (let it be said with shame), not, as at the beginning, a government merely permitting, while it regretted Slavery, but a government openly favoring and vindicating it, visiting also with its displeasure all who oppose it.

During late years the Slave Power has introduced a new test for office, which would have excluded Washington, Jefferson, and Franklin. It applies an arrogant and unrelenting ostracism to all who express themselves against Slavery. And now, in the madness of tyranny, it proposes to extend this curse over new soil not yet darkened by its presence. It seeks to make the flag of our country the carrier of Slavery into distant lands,—to scale the mountain fastnesses of Oregon, and descend with its prey upon the shores of the Pacific,—to cross the Rio Grande, and there, in broad territories, recently wrested from Mexico by robber hands, to plant a shameful institution which that republic has expressly abolished.

In the prosecution of its purposes, the Slave Power has obtained the control of both the great political parties. Their recent nominations were made to serve its interests, to secure its supremacy, and especially to promote the extension of Slavery. Whigs and Democrats,—I use the old names still,—professing to represent conflicting sentiments, concur in being representatives of the Slave Power. General Cass, after openly registering his adhesion to it, was recognized as the candidate of the Democrats. General Taylor, who owns slaves on a large scale, though observing a studious silence on Slavery, as on all other things, is not only a representative of the Slave Power, but an important constituent part of the Power itself.

I will not dwell upon the manner in which General Taylor was forced upon the late Whig party. This has been amply done by others. But you will pardon me, if I allude to the aid his nomination derived from a quarter of the country where it should have encountered inexorable opposition,—I refer to New England, and especially to Massachusetts. I speak only what is now too notorious, when I say that it was the secret influence which went forth from among ourselves that contributed powerfully to this consummation. Yes! it was brought about by an unhallowed union—conspiracy let it be called—between two remote sections: between the politicians of the Southwest and the politicians of the Northeast,—between the cotton-planters and flesh-mongers of Louisiana and Mississippi and the cotton-spinners and traffickers of New England,—between the lords of the lash and the lords of the loom.

And now the question occurs, What is the true line of duty with regard to these two candidates? Mr. Van Buren—and I honor him for his trumpet call to the North—sounded the true note, when he said he could not vote for either. Though nominated by opposite parties, they represent substantially the same interest. The election of either would be a triumph of the Slave Power, entailing upon the country the sin of extending Slavery. How, then, shall they be encountered? To my mind the way is plain. The lovers of Freedom, from both parties, and irrespective of all party associations, must unite, and by a new combination, congenial to the Constitution, oppose both candidates. This will be the FREEDOM POWER, whose single object will be to resist the SLAVE POWER. We will put them face to face, and let them grapple. Who can doubt the result?

I hear the old political saw, that "we must take the least of two evils." My friend from Ohio [Mr. Giddings] has already riddled this excuse, so that I might well leave it untouched; but I cannot forbear a brief observation. It is admitted, then, that Cass and Taylor both are evils. For myself, if two evils are presented to me, I will take neither. There are occasions of political difference, I admit, when it may become expedient to vote for a candidate who does not completely represent our sentiments. There are matters legitimately within the range of expediency and compromise. The Tariff and the Currency are of this character. If a candidate differs from me on these more or less, I may yet vote for him. But the question before the country is of another character. This will not admit of compromise. It is not within the domain of expediency. To be wrong on this is to be wholly wrong. It is not merely expedient for us to defend Freedom, when assailed, but our duty so to do, unreservedly, and careless of consequences. Who in this assembly would help to fasten a fetter upon Oregon or Mexico? Who that would not oppose every effort to do this thing? Nobody. Who is there, then, that can vote for either Taylor or Cass?

But it is said that we shall throw away our votes, and that our opposition will fail. Fail, Sir! No honest, earnest effort in a good cause can fail. It may not be crowned with the applause of men; it may not seem to touch the goal of immediate worldly success, which is the end and aim of so much in life. But it is not lost. It helps to strengthen the weak with new virtue,—to arm the irresolute with proper energy,—to animate all with devotion to duty, which in the end conquers all. Fail! Did the martyrs fail, when with precious blood they sowed the seed of the Church? Did the discomfited champions of Freedom fail, who have left those names in history that can never die? Did the three hundred Spartans fail, when, in the narrow pass, they did not fear to brave the innumerable Persian hosts, whose very arrows darkened the sun? Overborne by numbers, crushed to earth, they left an example greater far than any victory. And this is the least we can do. Our example will be the main-spring of triumph hereafter. It will not be the first time in history that the hosts of Slavery have outnumbered the champions of Freedom. But where is it written that Slavery finally prevailed?

Assurances here to-day show that we need not postpone success. It seems already at hand. The heart of Ohio beats responsive to the heart of Massachusetts, and all the Free States are animated with the vigorous breath of Freedom. Let us not waste time in vain speculations between two candidates. Both are bad. Both represent a principle we cannot sanction.

Whatever may be said to the contrary by politicians, Freedom is the only question now before the American people. The Bank is not alone an "obsolete idea." All the ideas put forward in the controversies of party are now practically obsolete. Peace has come to remove the question of the Mexican War. We are no longer obliged to consider if an unnecessary and unconstitutional war shall be maintained by supplies. There is no question with regard to the Sub-Treasury. This is now firmly established. Then comes the cause of Internal Improvements. This is not unimportant, but happily it is removed from the domain of party. The Chicago Convention for the express consideration of this subject was composed of various political opinions, and I understand that its recommendations are now sustained by opposite parties.