I’m not so sure. I think it may all be ignorance. Consider the date 1861 and the reference to “Union Candidates”. While there wasn’t an election in 1861, that is the year the Civil War broke out. Perhaps the shirt’s designer is so clueless that he or she believes what happened that year was an election contest between the Union Party and the Confederacy Party, with Lincoln as the Union candidate for President.

I can easily believe that someone might be that ignorant of history, considering that many younger folks today confuse the bombing of Pearl Harbor with the bombing of Hiroshima.