Question

How did the Dred Scott decision affect the election in 1860?

Answer 1

Dred Scott is date at the decision in 1857. Then he got his case when the landmark decision by the United States of America he went to supreme court on his United States labor by his law and constitutional by the law. And he stengthened by the Republican party, and which won the elections. 

Answer 2

Here is the answer you are looking for based off the detailed 1st answer:

It strengthened the Republican Party, which won the election.