I'm not joking. That is the story to the best of my recollection. However, it has been about 20 years since I looked into it.
[Edit]
It looks like I might not have remembered it quite right.
I found a relevant link on the subject.
1860 Republican National Convention
The Republican Party held its second national convention on May 16, 1860, in Chicago, Illinois. It adopted a moderate stance on slavery and was against its
expansion, although some delegates wanted the institution abolished altogether.
The two frontrunners for the Republican presidential nomination were Lincoln and
New York Senator
William Seward. After three votes,
Lincoln was nominated with Hannibal Hamlin as his running mate....
...On November 6, 1860, voters went to the ballot box to cast their vote for President of the United States. Lincoln won the election in an electoral college landslide with 180 electoral votes, although he secured less than 40 percent of the popular vote.
Election of 1860