In 1958, Kennedy was re-elected to a second term in the Senate, defeating Republican opponent, Boston lawyer Vincent J. Celeste, by a margin of 874,608 votes, the largest margin in the history of Massachusetts politics. It was during his re-election campaign that Kennedy's press secretary at the time, Robert E. Thompson, put together a film entitled "The U.S. Senator John F. Kennedy Story", which exhibited a day in the life of the Senator and showcased his family life as well as the inner workings of his office to solve Massachusetts-related issues. It was the most comprehensive film produced about Kennedy up to that time. In the aftermath of his re-election, Kennedy began preparing to run for president by traveling throughout the U.S. with the aim of building his candidacy for 1960.