About the US Democrat Party flag

The most common mascot symbol for the party has been the donkey, or jackass. Andrew Jackson's enemies twisted his name to "jackass" as a term of ridicule regarding a stupid and stubborn animal. However, the Democrats liked the common-man implications and picked it up too, so the image persisted and evolved. Its most lasting impression came from the cartoons of Thomas Nast from 1870 in Harper's Weekly. Cartoonists followed Nast and used the donkey to represent the Democrats, and the elephant to represent the Republicans.

Although both major political parties (and many minor ones) use the traditional American colors of red, white, and blue in their marketing and representations, since election night 2000, blue has become the identifying color for the Democratic Party, while red has become the identifying color for the Republican Party.