The NDP is poised to form government after jumping out to a large lead in the Alberta election.
As of 9:15 p.m., the party had 40 percent of the votes compared to 28 percent for the Progressive Conservatives and nearly 25 percent for the Wildrose party.
This has prompted many media outlets to declare that NDP leader Rachel Notley will preside over a majority government.
It marks the end of the 43-year reign of the Progressive Conservatives.
Because the Wildrose vote is more concentrated, it's expected to form the Official Opposition.
Progressive Conservative Leader Jim Prentice was reelected in Calgary-Foothils. He announced that he's quitting as party leader.
The NDP did spectacularly well in Edmonton, winning all 19 constituencies.
Notley lived for a few years in the Vancouver area in the 1990s and early 2000s, working for a former B.C. NDP government and for the Health Sciences Association of B.C.
Her upbeat campaign reminded many observers of the Jack Layton–led Orange Wave, which catapulted the federal New Democrats into the Official Opposition in the 2011 election.
Her stance on pipelines is significantly different from that of Prentice, a vice chair of CIBC before becoming premier.
On May 2, Notley told CBC Radio's The House program that she opposes the proposed Keystone XL pipeline because it would ship diluted bitumen out of the province, depriving jobs for Alberta workers.
In April, she told the Calgary Herald that she would pull provincial support from the Northern Gateway pipeline project if she were elected premier.
At the time, she cited environmental issues and First Nations opposition.
Notley has spoken favourably about the proposed Energy East pipeline.