While an effort by Stuart Symington or Hubert Humphrey could have, on paper, been successful in Nebraska's primary, Kennedy had managed to outmaneuver them, laying early groundwork which gave him a solid lead in the state.
Kennedy managed, in early 1958, to secure Bernard Boyle's support.
By the time that others such as Humphrey, Symington, and Johnson began to inquire with Boyle about their own prospective candidacies, they learned that they had a arrived a year too late.
Kennedy went in to win the primary, unchallenged. With the exception of Kennedy, all candidates were write-ins.