Joe Schwarz won a seat in the Michigan Senate in 1986 and was re-elected in 1990, 1994 and 1998. He lost a Republican primary to U.S. Rep. Nick Smith in 1992.
In the 2004 primary, Schwarz won 28 percent of the vote and Smith's son, attorney Brad Smith, had 22 percent. Former state Rep. Tim Walberg had 18 percent, state Rep. Clark Bisbee of Jackson had 14 percent, state Rep. Gene DeRossett of Manchester had 11 percent and former state Rep. Paul DeWeese of Eaton Rapids had 7 percent.