Lehman (born August 2, 1945) is an American educator and politician from Racine, Wisconsin.
Lehman represented the 21st District in the Wisconsin Senate from 2007 to 2011 and again from 2012 to 2015, and was the Democratic nominee for Lieutenant Governor of Wisconsin in 2014.
Previously, Lehman was a member of the Wisconsin State Assembly from 1997 through 2007.
Elected as a state senator in 2006 but unseated in 2010, Lehman retook his old seat in the 2012 Wisconsin recall elections, defeating the incumbent, Van Wanggaard.