MI-01: Strong Santorum
MI-02: Tossup. Can Grand Rapids proper outvote the other counties? That's the answer to who wins here.
MI-03: Strong Santorum, he takes the rural counties easily, Romney might have some strength in Kent County but then he's winning the state big time.
MI-04: Strong Santorum.
MI-05: Tossup.
MI-06: Strong Santorum, Romney did lousy here even in 2008.
MI-07: Tossup, kind of an odd area to predict.
MI-08: Lean Romney, if he loses here it'll be disastrous.
MI-09: Strong Romney, not much to say.
MI-10: Tossup.
MI-11: Strong Romney
MI-12: Strong Romney
MI-13: Strong Romney
MI-14: Strong Romney
I think your predictions are more or less accurate, except, as others have pointed out, Grand Rapids is not in MI-02, so it will not be a major factor there... the Dutch Reformed impact on the GOP primary throughout that region is going to overwhelm any Romney strength in the urban areas of Kent County...I expect Santorum will win Kent County.
Strong Santorum: CDS 1, 2, 3, 4
Lean Santorum: CDS 5, 10 (working class GOP voters)
Strong Romney: CDS 8, 9, 11, 13, 14
I expect Paul will do best in CD 13. Could he possibly win there?
I predict that though Romney will win the state, Santorum may get more CD delegates...