Mr. Giddings has had much of our respect for his straight forward manliness in facing the slaveholding bullies : but his obstinate determinntion to vote for fillingthe n.ational offices with Slaveholclers will cut him off f rom the support of the Liberty party generally. Just previous to the elcction in Ohio. Mr. G. was interrogated whether, if elected, he would vote for a Slaveholder for President, should one be nominated by the Whig party? Mr. G. replies that he has no anticipation of such an event : but should that prove to bo the case, he should "lend no exertion for his election," bclicving that no slaveholder could be elected by the Whig party. He has no doubt whatever, he says, of the propriety of the coursc he took in regurd to the election of Mr. Clay in 1344 ; and adds, - "I have review cd the opiniÃ³n I then formcd, but am constrained to say, that under the same circumstances, I should vote for a slaveholder asfrccly as I did then.1'' In answor to the inquiry whether he would vote for a slaveholder for Speaker, hc replies, - "Inl841, when John White was elected speaker, I opposed him for the reason that I feit it a duty to sustain a northern man. He was elected, however, and discharged his duty faithfully, assigning to northern men their full proportion ol important positions. Whcn 1 was arraigned for daring to assert the right of my constituents, and when I was myself forbidden to defend my own rights or those of my people, he vindicated them to the extent of his power and his official influence. At the next election for speaker I voted for him, and have no Ã¯esitation in saying that under like circumstances should pursue the same course ; and although it is not likely that i shall ever again be placed in a similar losition, or feel the most distant wish to vote for a slaveholder, to any office, vet, as we cannot foretel events, I can only say that 1 shall maintain my principies to the extent of my power, under every and all circumstances." Ilere is the fundamental difierence between Whigs and Liberty men : Whigs will vote for Slaveholders of thcir own party, and thereby continue the Slave Power in all its vigor and supremacy : Liberty men wiÃl not vote for slaveholders of any party. Both cannot be right. NeÃther uniÃ³n nor co-operation can takc place betweed the two parties so long as this difÃ¯erence exist.