A base strife for southern votes has hitherto, to no small extent, enlisted both the political parties at the north in the service of the slaveholders. The late unwonted independence of northern politicians, and the deference paid by them to the wishes of their own constituents, in preference to those of their southern colleagues, indicates the advance of public opinion. No less than 49 northern members of the administration party voted for the Atherton gag, while only 27 dared to record their names in favor of Johnson's; and of the representation of SIX States, _every vote_ was given _against_ the rule, without distinction of party. The tone in which opposite political journals denounce the late outrage may warn the slaveholders that they will not much longer hold the north in bonds. The leading administration paper in the city of New York regards the RULE with "utter abhorrence;" while the official paper of the opposition, edited by the state printer, trusts that the names of the recreant northerners who voted for it may be "handed down to eternal infamy and execration." The advocates of abolition are no longer consigned to unmitigated contempt and obloquy. Passing by the various living illustrations of our remark, we appeal for our proofs to the dead. The late WILLIAM LEGGETT, the editor of a Democratic Journal in the city of New York, was denounced, in 1835, by the "Democratic Republican General Committee," for his abolition doctrines. Far from faltering in his course, on account of the censure of his own party, he exclaimed, with a presentiment almost amounting to prophecy, "The stream of public opinion now sets against us, but it is about to turn, and the regurgitation will be tremendous. Proud in that day may well be the man who can float in triumph on the first refluent wave, swept onward by the deluge which he himself, in advance of his fellows, had largely shared in occasioning. Such be my fate; and, living or dying, it will in some measure be mine. I have written my name in ineffaceable letters on the abolition record." And he did live to behold the first swelling of the refluent wave. The denounced abolitionist was honored by a democratic President with a diplomatic mission; and since his death, the resolution condemning him has been EXPUNGED from the minutes of the democratic committee. Of the many victims of the recent awful calamity in our waters, what name has been most frequently uttered by the pulpit and the press in the accents of lamentation and panegyric? On whose tomb have freedom, philanthropy, and letters been invoked to strew their funeral wreaths? All who have heard of the loss of the Lexington are familiar with the name of CHARLES FOLLEN. And who was he? One of the men officially denounced by President Jackson as a gang of miscreants, plotting insurrection and murder--and, recently, a member of the Executive Committee of the American Anti-Slavery Society.