It soon became evident that with the Whigs divided and the Democrats compactly united upon the finality of the Compromise, the latter would have the advantage in the ensuing Presidential election. The tendency would naturally be to consolidate the slave-holding States in support of the Democratic candidates, because that party had a large, well-organized force throughout the North cherishing the same principles, co-operating for the same candidates, and controlling many, if not a majority, of the free States. The Southern Whigs, equally earnest with the Democrats for the Compromise, were constantly injured at home by the outspoken anti-slavery principles of leading Northern Whigs. Just at that point of time and from the cause indicated began the formation of parties divided on the geographical line between North and South. But this result was as yet only foreshadowed, not developed. Both the old parties held their national conventions as usual, in 1852, with every State represented in both by full delegations. There were peculiar troubles in each. In the Democratic convention the dissensions had been in large part inherited, and had reference more to persons than to principles, more to the candidate than to the platform. While something of the same trouble was visible in the Whig ranks, the chief source of contention and of party weakness was found in the irreconcilable difference of principle between all the Southern Whigs and a large number of the Northern Whigs. In the South they were unanimous in support of the Compromise. In the North they were divided. DEMOCRATIC NATIONAL CONVENTION.