I think the whole dynamic is ...

I think the whole dynamic is different. Whereas in [Barack] Obama's case, even though there was no incumbent, he was able to run against eight years of Bush-Cheney and a Republican Congress, and everyone was tired of everything. He was able to benefit from that.
 William Kristol

Quotes from the same author

If you look at the polls - the conservatives are fine.I think there will be a fair amount of enthusiasm, or at least motivation. They very much want to remove President [Barack] Obama.
 William Kristol
I think reading intelligent expressions of different points of view is a good thing, and there is a way in which being in academia in a classroom at the University probably gives you, can give you an academic view of things, and reading actual real time debates about what should we do in Syria or the Buffett rule, budget issues...gives you a kind of sense that's hard to get in a classroom.
 William Kristol
In any case, open-seat presidential elections like 2008 just are different in character from incumbent reelects, and I think that's the most important thing about this election - is that once there's an incumbent running for reelection, most of the debate is about, "Has he [Barack Obama] done a good job?" Most of the judgment is, "Do you want to keep him or do you want to replace him?" Now, the opponent has to also be acceptable and has to make his own case.
 William Kristol
The most devastating indictment of the president's proposal is that it threatens to destroy virtually everything about American health care that's worth preserving. Under the plan's layers of regulation and oversight, even seeing a doctor whenever you like will be no easy matter: access to physicians will be carefully regulated by gatekeepers; referrals to specialists will be strongly discouraged; second opinions will be almost unheard of; and the availability of new drugs will be limited.
 William Kristol
Maybe one thing that has happened is that the claims of non-partisanship of the mainstream media have been a little bit exploded. Mostly I'd say what, if anything has caused the change, are just the obvious technological changes - proliferation of easier access to getting your opinions out and the proliferation of media.
 William Kristol