Final answer:
The election of 1864 was significant as it took place during the Civil War, tested American democracy, and resulted in Abraham Lincoln's re-election, reinforcing the Union's resolve and the fight against slavery.
Step-by-step explanation:
The election of 1864 was notable for several reasons. During the midst of the Civil War, President Abraham Lincoln faced severe criticism and declining popularity due to the ongoing conflict and his policies, such as the suspension of the writ of habeas corpus. Despite this, he successfully won re-election, which was an essential affirmation of his leadership and the Union cause. Lincoln's victory came at a crucial point, solidifying the North's commitment to restoring the Union and ending slavery.
The resilience of American democracy was also tested, but ultimately held strong, with the election being conducted even amid the backdrop of a divisive and bloody war. Lincoln's opponent, George B. McClellan, represented the Democratic Party, which was split between war Democrats and peace Democrats, showing the deep divisions within the country at the time. The result was a significant triumph for Lincoln and the Republicans, as Lincoln carried nearly all the free states with a robust electoral college majority despite winning less than 40 percent of the popular vote in a four-way race in the 1860 election.