 President Johnson backed out because he didn't want to face the possibility of losing the nomination because you had a segment of that party that hated LBJ in 1968. And even though I think he would have gotten the nomination, I suspect, it would have been really ugly and you would have had a lot of people basically screaming against LBJ. Hubert Humphrey ends up the nominee, but there was a lot of uncertainty after President Johnson backs out of the race.