Kirill Basin, a Democratic candidate for Congress, was arrested on Saturday after a violent altercation at Keawakapu Beach in South Kihei.
The incident occurred after Basin was filmed taunting a group on the beach, saying "What you gonna do? What you gonna do?"
He was then knocked out cold in one punch from a fed-up man who had apparently had enough of his behavior.
Basin, 40, was charged with two counts of first-degree terroristic threatening, and his bail was set at $1 million.
The altercation took place on South Kihei, a census-designated place in Maui County, Hawaii, located on the leeward side of Maui between Ma'alaea and Wailea.
Basin is running against incumbent U.S. Rep. Jill Tokuda in Hawaii, and his campaign promises include offering "real accountability" for Hawaii voters.
According to court records, Basin's arrest stems from a violent confrontation that left him with a serious injury.
Basin's campaign has been marred by controversy, with some critics questioning his behavior and fitness for office.
The incident has raised questions about Basin's ability to handle the stresses and pressures of public office.
Basin's bail was set at $1 million, and his case is ongoing.