Robert Caro recounts that Lyndon Johnson made political calls at 2 or 3 a.m. and once called a senator at 5 a.m. to seek the senator's vote.

“being tired or something doesn't even seem to figure in- into the equation. Sometimes I'm looking at, you know, uh, I, I can't remember one off the top of my head, and you'll say, "He's making this call," and Johnson's making this call at 2:00 and 3:00 in the morning.”

“He's up making these calls to get his way. I, in, in fact, there's a funny anecdote. One senator, uh, Johnson calls him at, uh, 5:00 AM to ask him for his vote on something, and the senator says, "Oh, Lyndon, I was just lying here waiting for your call."”