A woman was arrested on Monday after allegedly smearing peanut butter on 30 cars parked outside what she believed was a pro-Donald Trump rally.

Christina Ferguson was arrested in Amherst Junction, Wisconsin after interrupting what turned out to be a meeting of a local environmental organisation, Tomorrow River Conservation Club.

Witnesses claimed the 32-year-old entered the meeting at 9:30pm holding a “family-size jar of low-sodium, creamy natural Jif” peanut butter, shouting about how much she hated the Republican candidate.

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Ms Ferguson was asked to leave the premises but shortly after, members went to check the car park to “make sure she wasn’t doing anything to their vehicles after leaving.”

One witness, who allegedly caught Ms Ferguson spreading peanut butter on a car, shouted at her before calling police.

When officers from Portage Co. Sheriff Department questioned Ms Ferguson, she claimed she hadn’t left her apartment that night, while allegedly licking her fingers repeatedly, according to the complaint.

However, one of the meeting members identified her and Ms Ferguson admitted her involvement.

When pushed as to why she had committed the offence, Ms Ferguson talked about “how much she loved Hillary Clinton and hated Donald Trump,” the complaint says.

“Peanut buttering is better than firebombing, and Trump plans on firebombing everybody in other countries,” Ms Ferguson reportedly said.

However, when she realised she had mistakenly identified the meeting as a Trump rally, she was remorseful saying she was “just fed up about the entire election.”

The complaint claimed Ms Ferguson smelt strongly of alcohol and her blood alcohol level was 0.218, more than twice the legal limit for driving.