His campaign co-chair was in charge of counting votes in that state.
Republican operatives from out-of-state physically shut-down the vote-counting at Miami-Dade.
A judge who was later invited (and accepted, until word got out) to a freeper event in South Carolina, made the Democrats waste 3 days of valuable time loading up trucks of ballots and transporting them to Tallahassee, only to refuse to look at the ballots once they arrived.
A "justice" on the US Supreme Court who was a duck-hunting buddy of one of the plaintiffs and who was appointed to the court while another plaintiff's father was Vice President, agreed to accept the case after the Florida State Supreme Court had ruled that all the votes had to be counted.
Not surprising, the "justice", as well as 4 of his cohorts (including one who expressed dismay at a potential Gore victory because she might have to delay her retirement by at least 4 years), ruled in favor of the plaintiff.
If this had happened in any other country in the world, Americans would say that that election was rife with fraud.