My guess is that the more rat part(the Ann Arbor border) is in Dingell's district. However, most of the rest of Washtenaw is marginal anyway. DeRossett won by the skin of his teeth last time(although I think he has Ann Arbor Township in his state rep district). The GOP calhoun townships will balance it out.(although I don't know which ones they are - probably marginal if near Battle Creek)
If the dem isn't Schauer or Doug Spade, this one is over before it starts. I don't think Spade will pull off the win. His brother ran for state senate, won Lenawee and got crushed out west(although it's a solid GOP seat because of that) in Branch, Hillsdale, and St Joseph counties. Schauer however held his own in Jackson against Mortimer and won BIG in Calhoun.
Bisbee's gun votes will cost him big throughout the district. Especially Eaton and Calhoun. Schauer ran as a "pro-gun dem"(talk) in 96 or 98 against an anti-gun GOP'er and won. I do expect business to line up behind Bisbee though. He's been great to them.
I wish I knew more about Walberg. It's been a few years since he was in office, and they still seem to like him in his area if the poll numbers are even remotely accurate. I don't know is 2a stance, but Lenawee is a big gun area. I have to wonder one thing. If Walberg's a minister, will that matter with the Catholic vote? I don't THINK it will in the general, because I think in this day in age, many Catholics would be happy just to see a Christian in office.
This is going to be an interesting race to say the least.