This district is a conservative district and there is no reason for Michigan conservatives to be supporting a RINO like John Schwarz.
Tim Walberg is pro-life, pro-gun, pro-border security, pro-growth. He deserves support.
Their votes come as no surprise.
With only a single conservative running against Schwarz, I think the odds are in our favor to knock off the RINO and elect Walberg. Had 2 or 3 of the also-ran conservatives dropped out prior to the 2004 primary, Walberg would have defeated Schwarz and that RINO would have never gotten to Congress.
BTW, Walberg is not only (a lot) more connservative, he is a better ideological fit for the district and a safer bet in the general election. Holding one's nose and voting for the liberal may be necessary in, say, Rob Simmons's CT-02 (in which President Bush was held to 44% and a big chunk of those Bush voters were social liberals), but it would be the worst possible move in a rural Midwestern district such as the MI-07.