And what will be the result of opposing their re-election?  Suppose that a considerable number of Whigs secede from the Whig party, and support a candidate of this new party, what will be the result?  Do we not know what has been the case in this State?  Do we not know that this district has been unrepresented from month to month, and from year to year, because there has been an opposition to as good an antislavery man as breathes the air of this district?  On this occasion, and even in his own presence, I may allude to our Representative, Mr. Hale.  Do we want a man to give a better vote in Congress than Mr. Hale gives?  Why, I undertake to say that there is not one of the Liberty party, nor will there be one of this new party, who will have the least objection to Mr. Hale, except that he was not nominated by themselves.  Ten to one, if the Whigs had not nominated him, they would have nominated him themselves; doubtless they would, if he had come into their organization, and called himself a third party man.

Now, Gentlemen, I remember it to have occurred, that, on very important questions in Congress, the vote was lost for want of two or three members which Massachusetts might have sent, but which, in consequence of the division of parties, she did not send.  And now I foresee that, if in this district any considerable number of Whigs think it their duty to join in the support of Mr. Van Buren, and in the support of gentlemen whom that party may nominate for Congress, the same thing will take place, and we shall be without a representative, in all probability, in the first session of the next Congress, when the battle is to be fought on this very slavery question.  The same is likely to happen in other districts.  I am sure that honest, intelligent, and patriotic Whigs will lay this consideration to their consciences, and judge of it as they think they ought to do.

Gentlemen, I will detain you but a moment longer.  You know that I gave my vote in Congress against the treaty of peace with Mexico, because it contained these cessions of territory, and brought under the authority of the United States, with a pledge of future admission into the Union, the great, vast, and almost unknown countries of New Mexico and California.

In the session before the last, one of the Southern Whig Senators, Mr. Berrien of Georgia, had moved a resolution, to the effect that the war ought not to be continued for the purposes of conquest and acquisition.  The resolution declared that the war with Mexico ought not to be prosecuted by this government with any view to the dismemberment of that republic, or to the acquisition, by conquest, of any portion of her territory.  That proposition he introduced into the Senate, in the form of a resolution; and I believe that every Whig Senator but one voted for it.  But the Senators belonging to the Locofoco or Democratic party voted against it.  The Senators from New York voted against it.  General Cass, from the free State of Michigan,