A "dark horse candidate" is someone who is unexpected to win, oftentimes because they lack the fame or experience of their competitors. There are many synonyms for this phrase, some of which include "underdog," "long shot," "outsider," "unexpected contender," and "surprise candidate." Each of these phrases suggests an unpredictable and uncertain outcome, where the odds are not in the candidate's favor. These terms are often used in politics, sports, and other competitive arenas. Regardless of the context, being a dark horse candidate can be both exhilarating and challenging, as they strive to overcome the odds and emerge victorious.