For the first few weeks of the canvass the Whigs had strong hope of success. The name of General Scott evoked much enthusiasm, and his splendid military reputation, acquired in two wars, was favorably contrasted with that of General Pierce, who was one of President Polk's political brigadiers. But these indications were the bubbles and froth that floated on the surface. The personal characteristics of the candidates were lost sight of in the face of the great issues involved. The people soon perceived that if there was indeed merit in the Compromise measures, it would be wise to intrust them to the keeping of the party that was unreservedly--North and South-- in favor of upholding and enforcing them. On this point there was absolutely no division in the Democratic ranks. In New York the friends of Marcy and the political heirs of Wright cordially harmonized in favor of the Compromise. Mr. Van Buren returned to Tammany Hall as fresh and buoyant as if his allegiance had never been broken; and in a great convocation of the Democracy, the prodigal was welcomed, Pierce's nomination applauded, the platform cheered, the anti-slavery creed forsworn, the Whig party roundly abused, and word sent forth to the uttermost parts of the Union that the Empire State had resumed her place at the head of the Democratic line. The Whigs soon found to their dismay that the platform and the candidate were inseparable. They could not make a canvass upon the one in the South and upon the other in the North. General Scott had indeed heartily assented to all the principles proclaimed at the convention, but so long as Horace Greeley was eulogizing him in the "Tribune," and Seward supporting him on the stump, it was idle to present him as an acceptable candidate to slave-holding Whigs in the South. Supporting the candidate and spitting on the platform became the expressive if inelegant watchword of many Northern Whigs, but for every Whig vote which this phrase kept to his party allegiance in the free States, it drove two over to the Democracy in the slave States. Moreover, spitting on the platform, however effective as an indication of contempt, would not satisfy the conscience or the prejudices of large numbers of Whigs who voted directly for the candidates of the Free-soil party, John P. Hale of New Hampshire for President, and George W. Julian of Indiana for Vice-President. DEFEAT OF THE WHIG PARTY.