It's called message control. She has it & the Repub hopefuls have just the opposite.
They have to distinguish themselves from the pack. Other than Jeb, they all seem eager to shoot their mouths off. And we ain't seen nothin' yet.
She's well known, her general political bent obvious. She's a third way Democrat, more like Repubs than many in the party would like. That's a big boost w/ swing voters, however. She's survived a multitude of trumped up scandals & whispering campaigns, so she's savvy enough not to give 'em much ammunition.
Therefore, she'll mostly sit back atm & enjoy the show.
Jeb might have a nomination winning strategy- forget the primaries for the most part, roll out a seemingly sane message at the convention, which might be a real doozie. Everybody gets behind Jeb because he's the only guy not standing on his dick in his golf shoes.