Monday's referendum concluded a months-long campaign by separatists to secure a public vote on the issue. Alberta separatists had believed Quebec used the threat of independence to gain significant political leverage over Canada's central government, though two previous attempts were unsuccessful.
The mood soured quickly at a pro-separatist watch party in Edmonton as the hum of upbeat chatter quieted when those present saw the projected results published overnight by Canadian broadcaster CBC and others.
Those who opposed a breakup, including Carney, called for Canada to present a united front in the face of external pressures, which include an ongoing trade war with the United States.
While the province chose to stay, deep political divisions endure. Early results also suggested that most proposals on the ballot would pass, including measures for the province to take increased control over immigration levels.
Alberta has voted overwhelmingly to remain part of Canada, delivering a huge setback to the western Canadian province's separatist movement following a decisive defeat.
Preliminary results indicated that more than two-thirds of voters chose Canada over a push for independence for the province, according to Elections Alberta.