Have these people never heard of the Civil War? 
There were four candidates involved in the 1860 election. Lincoln and Breckinridge were only two.
It is disingenuous to try to hammer history through the dies of false dichotomy. It is more complicated than that.

Virginia's vacillation on the issue of secession doomed Maryland to years of Union occupation, and ultimately, because Maryland was
not a 'state in rebellion', but under Yankee rule, unless manumitted by their owners, the slaves there were not freed by law until 1865, an additional two years of servitude.
For those who don't understand Crimea, Russia and elections, look at suspended Habeas Corpus, people rounded up and imprisoned on suspicion of being a Southern sympathizer, Elections held under the thumb of your invaders, and finally, a well-culled husk of a legislature (or the remnant) voting to stay part of the Union. [invade, replace, elect, direct]
But history is seldom taught, because you never know when someone might want you to repeat it.
At one time, we were thirteen sovereign States, 13
countries, states or commonwealths, with our own governments, currencies, flags, constitutions, legislatures, who agreed to work together for our mutual benefit, the advantage of a common currency and measurement standards, and for our mutual defense, with a small and limited government to oversee that cooperation, to settle disputes, to coin our money and provide for the common defense (mostly Navy).
When that was not working, and the issues of division (of which there were many) so conflicted that no solution seemed mutually acceptable, inevitably, several of those sovereign States sought to dissolve the former voluntary compact and to forge a new one that better suited their aims.
Have we returned to such a state of affairs? If so, it is at the behest of our Media, the divisive elements in our Government, many of whom subscribe to beliefs, if not the influence of outside interests, those not our own.
Here we go again, and, yes, it's complicated. Only this time the interests which seek to influence us would control us if they could, from the Communists to the Mullahs to Europe (still dependent on us after a century of self-destruction). Much preparatory groundwork and division has been sown under the guise of free speech and religion, and those who would own us spy daily on our strengths, exacerbate our weaknesses, foment division, and suborn invasion, not for the purpose of National unity, but to divide.
Dig deep enough and you will find foreign influences in the former conflict, jealous of our resources and space, who sought to control directly or otherwise the wealth and people of this continent.
plus ça change, plus c'est la même chose