He helped organized the effort to deny renomination to President Johnson in 1967 and opposed the war in Vietnam.
Mr. Cahill's political descent was so precipitous that he became the first incumbent governor in New Jersey history to be denied renomination by his party.
He was denied renomination in the 1914 Democratic primary.
But in fact only one incumbent had been denied renomination before Tuesday.
The Democrats denied renomination to Gov. Bruce Sundlun, whose administration had been plagued by ethical and fiscal problems.
In 1968, he was denied renomination by a conservative Democrat, Patrick T. Caffery.
In 1901, Wolcott was denied renomination to the Senate, which ended his political career.
In 1872 Jacob was denied renomination by the Democratic Party, which was controlled by Camden.
Sandlin was first elected to Congress in 1920, when he denied renomination to the incumbent, John Thomas Watkins, also of Minden.
Hiram Johnson was denied renomination for Governor as a Republican; he ran as a Progressive and was re-elected.