Background
Radtke was born on October 23, 1951 in Watertown, Wisconsin.
Radtke was born on October 23, 1951 in Watertown, Wisconsin.
University of Wisconsin–Madison.
He graduated from Watertown High School as well as the University of Wisconsin–Whitewater and the University of Wisconsin–Madison. Radtke was first elected to the Assembly in 1978. He is a Republican.
Radtke is married with two children and is a member of the Knights of Columbus.