"No candidate in recent history, Democrat or Republican, has won the White House without winning the Ohio primary," Clinton told cheering supporters Tuesday night in Columbus, Ohio.
Kennedy's name was not on the ballot in the Ohio Democratic primary in 1960. Michael DiSalle, who was the state's governor at the time, ran unopposed and took all the votes cast in the contest.
In the general election, Kennedy won the presidency even though Republican Richard M. Nixon won Ohio.
On Tuesday, Clinton won Ohio with roughly 54 percent of the vote compared with rival Barack Obama's 44 percent.
