Grimes Backs Hillary Clinton by Reimagining Retro Attack Ad: Watch

Even though Grimes Canadianess prevents her for voting in the U.S. Presidential election, she's still stumping for Hillary Clinton, urging people to vote in a video clip she posted to her Twitter.

The electro-pop phenom reworked a 1964 campaign ad from Lyndon B. Johnson, who used nuclear attack imagery to ward Americans away from opponent Barry Goldwater, a nuclear warfare supporter.