Her political clout would be worth nothing if she doesn't run. Then why would Fox keep her as a commentator? My money says she's running.
That is possible I guess - and certainly there are those, like me, who are extremely tired of the tease routine that she’s pulled so far, but in the end, while it may take a bit of the shine off of her star, she won’t be falling very far if she doesn’t get in.
Honestly, I think if she does get in at this point and gets her doors blown off (which I think is a distinct possibility despite the vehemence shown here by a few), that would hurt her more.