Senator, Iowa State Senate, District 25, 2023-present

Assistant Democratic Leader, Iowa State Senate, 2017-present

Mayor Pro Tem, Ames City Council

Senator, Iowa State Senate, District 23, 2002-2023

Candidate, Iowa State Senate, District 25, 2022

Candidate, Iowa State Senate, District 23, 2018

Member, Ames City Council, 1995-2003

Ranking Member, Education Committee

Member, Judiciary Committee

Member, Local Government Committee

Member, School Finance Formula Review Committee

Member, Subcommittee on Economic Development Appropriations

Member, Ways and Means Committee

Former Member, Human Resources Committee

Former Member, Judiciary Committee, Iowa State Senate

Former Member, Madrid Action Committee

Former Member, Subcommittee on Education, Iowa State Senate

Former Vice Chair, Subcommittee on Education, Iowa State Senate

Former Member, Tax Expenditure Committee, Iowa State Senate

Former Member, Transportation Committee, Iowa State Senate

Former Associate Professor of Economics, Iowa State University

Member, Ames Chamber of Commerce, present

Member, Ames Kiwanis Club, present

Member, Ames League of Women Voters, present

Member, Ames Patriotic Council, present

Member, Ames Convention and Visitors Bureau Board

Member, Ames Utility Retirement Board

Former Co-Chair, Ames Veterans Memorial Committee

Member, Commission on Tobacco Use Prevention & Control

Member, Iowa Civil Liberties Union

Treasurer, Story County Democratic Central Committee

Member, Story County Resource Enhancement and Protection Committee

Member, Story County Tobacco Task Force