Amanda Lathlin garnered 1,557 votes with all 56 polling stations reporting Tuesday night.
Progressive Conservative Jacob Nasekapow, a former band councillor in Moose Lake, got 817 votes.
Liberal Inez Vystrcil-Spence, who worked for a group that represents northern First Nations, received 369 votes.
All results are unofficial.
Lathlin is a former band councillor and daughter of Oscar Lathlin, who represented The Pas between 1990 and 2008.
Turnout was 22.7 per cent.
Voters in the vast riding have been without a representative for almost a year since New Democrat Frank Whitehead resigned last May for health reasons.
The Pas has generally been considered a safe seat for the NDP government — Whitehead won 73 per cent of the vote in the last provincial election.
But the NDP's popularity has sunk in opinion polls since the government raised the provincial sales tax in 2013, prompting an internal party revolt.
There was a hiccup at two assisted-living homes, where the votes were set aside and residents were given a chance to vote again.
Elections Manitoba says there was an administrative error — the homes were treated as institutional ballot stations when in reality residents were supposed to go to the regular polling station in their area.