Ukip candidate Carl Benjamin has had a fourth milkshake thrown over him in a week.
The far-right activist, who was touring Salisbury as part of his campaign for the European elections this week, was targeted by opponents in the street.
A Twitter user who posted a photograph of him doused in the milkshake quickly received more than 1,000 “likes”.
Another user posted: “This is becoming a habit.”
Mr Benjamin, who is being investigated by police for comments about raping Labour MP Jess Phillips, has been the target of a series of protests while campaigning for the EU Parliament elections.