Bush v. Gore is the US Supreme Court decision that has been credited with—or blamed for—ending the 2000 presidential election with its interrupted recount still unfinished. Bush and Gore, of course, were the two candidates: George W. Bush, the governor of Texas and son of the forty-first president, challenging the incumbent vice president, Al Gore. Bush v. Gore, the court case, is often used interchangeably as shorthand for Bush-versus-Gore, the entirety of the dispute over the outcome of the election.

Source: George W. Bush vs. Al Gore, 15 years later: We really did inaugurate the wrong guy – Salon.com