The 30-year-old victim was bitten at his apartment at around 6:45 a.m. Monday in the city's East Liberty neighborhood after a verbal argument turned physical. He ran to a gas station for help.
Police spokeswoman Emily Schaffer said she isn't able to say whether the victim supported Trump or opposed him.
The victim's ear was recovered by police in the apartment. Police said he was taken to UPMC Presbyterian hospital in stable condition.
Police said they know who bit the man's ear and are searching for him. They wouldn't give his name.
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