From his FaceBook account:
Today I announce I will not seek re-election to the State Senate. Representing the 27th Senate District has truly been an honor and I have been humbled by those who have placed their trust in me to represent their values in the legislature for over 20 years.
I would like to thank my family, friends and staff that have supported me throughout my 24 years in state service. I would also like to thank all of the dedicated public employees from each and every state agency that work hard day in and day out to help legislators like me and the constituents we represent. I will miss spending time with all of the wonderful people across the state of Wisconsin that I have met along the way. I will also miss my Capitol parking space!