A new character has entered the presidential race: a mascot bearing a strong resemblance to Walt Disney Co.'s Donald Duck but with a Trumpian mane of blonde hair.

His name is "Donald Ducks," the creation of the Democratic National Committee, which is using the mascot to taunt the GOP nominee about his undisclosed tax returns. The DNC says Donald Ducks will follow Mr. Trump along the campaign trail and make unwelcome cameos at his rallies.

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