Because the newly-elected Lincoln would not agree to any extension of slavery. So the final attempt at compromise failed.
The political party formed for the election of 1860 was the Constitutional Union party and their purpose was to preserve the Union.
...victory of Lincoln in the November 1860 election.
November 6, 1860.
he had a minority of the people's vote.
Stephen Douglas.
Constitutional Party candidate John Bell condemned sectional political parties and sectional strife in the U.S. Senate.
John Bell condemned sectional political parties.
1860
John Bell condemned sectional political parties.
John Bell condemned sectional political parties.
election of 1860
in 1860
Prior to the outbreak of the American Civil War, the election of 1860 increased sectional tensions in the United States by lifting a pro-union, anti-slavery statesman, Abraham Lincoln, into the presidency. In reaction, Southern states protested in many ways, but in no more dramatic way than, one by one, seceding from the Union.
Lincoln's opponent in the 1860 election
Tuesday, November 6, 1860
November 6, 1860
November 1860