By Scott Haggett and Nia Williams
CALGARY, Alberta (Reuters) - The left-wing New Democrats won election in the Canadian province of Alberta on Tuesday, ending the 44-year run by the Progressive Conservatives amid promises to review oversight of the oil and gas sector in the home of Canada's oil sands.
At the end of a month-long campaign, the New Democratic Party (NDP), which has never held more than 16 seats in the 87-seat provincial legislature, will lead a majority government. It held a commanding lead in early results, leading or elected in 54 seats at 9 p.m. local time while the Conservatives were ahead in just 13, according to CBC TV.
The NDP is expected to be far less accommodative to the Western Canadian province's powerful energy industry.
NDP Premier-elect Rachel Notley has proposed reduced support for pipeline export projects and a review of oil and gas royalties in the resource-rich province, and energy shares on Canadian stock markets are expected to react negatively to her party's victory.
The NDP had promised to hike corporate tax rates by two percentage points to 12 percent if elected, but its promise to review the amount of royalty payments due the province from oil and gas production made some investors nervous.
Alberta's oil sands are the largest source of U.S. oil imports.
The Conservatives had won 12 straight elections, but support for rookie Premier Jim Prentice plunged during the campaign and right-wing voters split support between the Conservatives and the younger, more conservative Wildrose Party, which appeared on track to be the official opposition.
Prentice, who left investment banking to become party leader in September, had a 75 percent approval rating at the beginning of March. A poll this week showed his approval rating had dropped to 31 percent.
Dissatisfaction over Prentice's tax-raising budget, the expense of the early election call when the province faces a C$5 billion ($4.1 billion) budget deficit and a series of gaffes by the conservatives squandered the party's lead.
(Additional reporting by Andrea Hopkins in Toronto; Editing by Ken Wills)
