. >> reporter: by then he was married to joan bennet with whom he would have three children but againdy when just after a thousand days of camelot president kennedy was assassinated in dallas. and in 1968 brother robert, a senator and democratic candidate for president shot and killed in a los angeles hotel. >> to be remembered simply as a good and decent man, who saw wrong and tried to right it, saw suffering and tried to heal it, saw war and tried to stop it. >> reporter: most assumed ted would one day take his rightful place in the oval office but in the summer of 1969 that all changed. kennedy drove his car off a narrow bridge on chappaquidick island in massachusetts resulting in the death of a campaign worker. >> this morning i entered a plea of guilty to the charge of leaving the scene of an accident. >> reporter: kennedy apologized in a televised speech and received a suspended sentence. though kennedy would declare in 1979 - >> today i formally announce i'm a candidate for president of the united states. >> reporter: he could not overcome questions about chappaquidick or incum

. >> reporter: by then he was married to joan bennet with whom he would have three children but again tragedy when just after a thousand days of camelot president kennedy was assassinated in dallas. and in 1968 brother robert, a senator and democratic candidate for president was shot and killed in a los angeles hotel. >> to be remembered simply as a good and decent man who saw wrong and tried to right it. who saw suffering and tried to heal it. saw war and tried to stop it. >> reporter: most assumed ted would one day take his rightful place in the oval office but in the summer of 1969 that all changed. kennedy drove his car off a narrow bridge on chappaquidick island in massachusetts resulting in the death of a campaign worker. >> this morning i entered a plea of guilty to the charge of leaving the scene of an accident. >> reporter: kennedy apologized in a televised speech and received a suspended sentence. though kennedy would declare in 1979 - >> today i formally announce i'm a candidate for president of the united states. >> reporter: he did not overcome questions about chappaquidi