Kate White was first elected to the Yukon Legislative Assembly in the general election for the 33rd Legislative Assembly on October 11, 2011. She was re-elected in the general elections for the 34th Legislative Assembly on November 7, 2016, and the 35th Legislative Assembly on April 12, 2021.
Ms. White has been the leader of the Yukon New Democratic Party since May 2019. She is also the Third Party House Leader.
During the 34th Legislative Assembly Ms. White was a member of the Members' Services Board, the Standing Committee on Public Accounts, the Standing Committee on Statutory Instruments and the Standing Committee on Appointments to Major Government Boards and Committees. During the 33rd Legislative Assembly Ms. White served on the Standing Committee on Appointments to Major Government Boards and Committees.