Attempts to intimidate individuals from participating in the presidential campaign can be a violation of federal law. A key federal civil rights law (42 U.S.C. § 1985(3)), popularly known as the Ku Klux Klan Act, may be applicable if “two or more persons conspire to prevent by force, intimidation, or threat, any citizen who is lawfully entitled to vote, from giving his support or advocacy in a legal manner, toward or in favor of the election of any lawfully qualified person as an elector for President or Vice President, or as a Member of Congress of the United States; or to injure any citizen in person or property on account of such support or advocacy.”
Go get them.