There is advantage to having leverage and using it at a critical moment. There is also advantage to being onboard the team from an early stage. He could become an advisor, or point man for something, like ag.
I also think he would like her help paying off his campaign debt.

I agree with Tano that a relative unknown (outside Iowa, at least) who's effectively unemployed right now could find working with a leading candidate's campaign very attractive. And anyway, it's not like his endorsement is going to sway huge gobs of people.

And I'm striving mightily to not make a stupid joke about Vilsack's name. It's been (over-) done, it's a cheap shot, and few would even find it funny. But Gawd, it's tough to hold it back!

Waiting until you know who is going to win also means waiting until your support becomes a nice to have but not critical. Iowa is close for Hillary. If Vilsack gets out and really campaigns for her, especially at the retail level, it could be big for her. And I have no doubt Hillary could make the quid pro quo deal, also knowing that she would renege if she got a better deal later when she didn't need Vilsack.

Well, I would endorse her too, if she paid off all my debts. $400,000 buys a lot of good will.

Loyalty in politics may be a rare commodity, however, it can be bought.

chsw