Question: Why is the donkey the symbol of the Democratic Party?
Answer: When Andrew Jackson ran against John Quincy Adams in the 1828 election, his opponents deemed him a "jackass" due to Jackson's populist views. Interestingly enough, Jackson liked the nickname so much he started using the donkey in his campaign posters to represent his doggedness and stubbornness.
Later on in the 1870s, political cartoonist Thomas Nast helped propel the donkey as the national symbol of the Democratic Party.
Tomorrow is Election Day. Go vote!