A member of the Minnesota Democratic–Farmer–Labor Party (DFL), Dibble represents District 61, which includes parts of Minneapolis in Hennepin County.

[1] Dibble first became involved in politics in the mid-1980s, working on civil rights issues for the gay, lesbian, bisexual, and transgender (LGBT) communities, including advocacy for those with HIV/AIDS.

[2] This led to organizing on issues of social and economic justice, especially in the areas of neighborhood livability, transportation, housing, energy and the environment.

[citation needed] Dibble worked in information technology support for Investors Diversified Services (now Ameriprise Financial) and later as a community organizer.

[citation needed] In 2014, Dibble was the chief author of a bill that allowed limited use of medical cannabis for patients who have debilitating or terminal illnesses.

[citation needed] Dibble continues to be the DFL leader in the Minnesota Senate on legislation relating to transportation and transit, energy efficiency, the environment, housing and economic development.