In January 2009, the NDP were reduced to two seats: Todd Hardy (Whitehorse Centre) and Steve Cardiff (Mount Lorne), after the Party's third member, John Edzerza, resigned to sit as an independent.

On November 12, a by-election was called for his riding of Whitehorse Centre on December 13, which was won by the Party leader Hanson.

Cardiff was killed in a car crash on July 7, 2011, again reducing the party to one seat in the legislature entering the 2011 election.

In May 2019, Kate White the incumbent MLA for Takhini-Kopper King was acclaimed as the new party leader, replacing Hanson.

[2] On April 28, the NDP announced that they had entered into a formal confidence and supply agreement with the Liberals.