MIAMI  Senator Hillary Rodham Clinton won the Florida Democratic primary on Tuesday, a contest that generated extraordinary voter interest even though the result will have no practical impact because no delegates were at stake.

With 95 percent of the vote counted, Mrs. Clinton, of New York, was running ahead of Senator Barack Obama of Illinois, 50 percent to 33 percent. Former Senator John Edwards of North Carolina was third, with 14 percent.

None of the Democratic candidates campaigned actively here, fulfilling a pledge to Iowa, New Hampshire, Nevada and South Carolina, the four states that had permission to hold early primaries, in response to Florida Democrats jumping the line by scheduling their primary before Feb. 5. But supporters of Mrs. Clinton and Mr. Obama worked hard to get their voters to the polls to make a symbolic show of strength.

Mrs. Clinton’s victory was expected and may have largely reflected her prominence on the national political scene for almost two decades. She did well among those who cast their votes early; among late deciders, Mr. Obama matched her almost one for one, according to exit polls conducted by Edison/Mitofsky.