Senator, Iowa State Senate, District 43, 2002-2023

Assistant Democratic Leader, Iowa State Senate, 2017-2021

Candidate, Iowa State Senate, District 43, 2018

Former Majority Whip, Iowa State Senate, 2013-2017

Assistant Majority Leader, Iowa State Senate, 2007-2013

Supervisor, Johnson County Board of Supervisors, 1993-1998

Former Member, Commerce Committee, Iowa State House of Representatives

Former Member, Commerce Committee, Iowa State Senate

Former Member, Joint Health Policy Oversight Committee, Iowa State Senate

Former Member, Natural Resources and Environment Committee, Iowa State Senate

Former Vice Chair, Subcommittee on Health and Human Services, Iowa State Senate

Former Co-Chair, Tax Expenditure Committee, Iowa State Senate

Former Chair, Ways and Means Committee, Iowa State Senate

Employee, Iowa Flood Center, present

Outreach and Community Education Director, University of Iowa Center for Global and Regional Environmental Research, present

Employee, Johnson County Public Health Department, 1988-1992

Director, Senior Advocates, Incorporated, 1986-1988

Director, Senior Education, Incorporated, 1981-1986

Member, American Federation of Teachers, Local 716

Member, Federal Emergency Management Agency Advisory Council

Member, Iowa Bicycle Coalition

Member, Iowa Chapter, Sierra Club

Member, Iowa Civil Liberties Union

Member, Iowa Ground Water Association

Chair, Progressive States Network