Answer:
As a result of the Democratic convention in 1860 the party split and two candidates were nominated.
Explanation:
In the presidential elections of 1860, the Democratic Party did not vote with a single candidate, but with 2: one from the north and the other from the south.
This was so because during the Democratic National Convention of that year there was a tension between the northern candidate Stephen Douglas, who said that each state should decide whether or not to allow slavery; and Southern candidate John Breckinridge, who supported the legality of slavery at the federal level.
It was this division of the party that finally allowed Abraham Lincoln, the Republican candidate, to be elected president.
