I would be fine with a Melinda-Jordin-Phil final three. It seems obvious to me that the judges are really behind Jordin now. She's young, has a big voice, and sparkles. She's a diamond in the rough as far as I'm concerned, but they seem to have gotten into her corner in the last three weeks and tend to overlook her flaws in singing her praises.
And I think she does have the second best voice on the show. I think the judges (and the producers) feel she's going to fit their target audience more than Melinda or Phil would.