It was a tight race, but Selinger beat out former minister of infrastructure and transportation Steve Ashton and former health minister Theresa Oswald, scooping up 759 of a possible 1,490 votes.
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Theresa Oswald netted 726 votes, but it wasn't enough to oust Selinger.
Selinger, who refused to step down and continued to govern during the NDP leadership campaign, ran a confident if not tepid campaign, juggling his daily duties as premier the entire time.
This was a historical race by many measures. It has never happened before in Manitoba where a sitting premier was openly challenged and a leadership race ensued.
“Our party is stronger now, we’ve got more members, our finances are in decent shape we’ve focused ourselves ... we've got one of the strongest economies in the country," Selinger told media in Winnipeg following the decision.
"When you can get results for the people of Manitoba, you always earn the chance of [serving them again]."
How did we get here?
Selinger called for a leadership vote last fall after a caucus revolt saw five cabinet minister resign. Oswald was among the infamous five rebel ex-ministers who went public with concerns over Selinger's ability to lead the party to victory in the 2016 provincial election.
The revolt stemmed from Selinger's public approval ratings tanking in the polls after the provincial government pushed through a PST increase of one per cent in 2013. That revolt, and the increase to an eight per cent provincial sales tax, ultimately precipitated the leadership election that would see Selinger retake the party helm.
Following the big news Sunday, Selinger wouldn’t answer whether those five rebel ex-ministers would be invited back into the fold in the coming months.
What's next for Selinger?
Moving forward, Selinger will be flanked by the new president of the party Ovide Mercredi, the NDP's first aboriginal president.
Mercredi, a former Assembly of First Nations chief, was strongly endorsed by Selinger and ended up ousting incumbent Ellen Olfert and beat out 18-year-old NDP provincial council member Tyler Duncan for the position Saturday.
On the PST increase, Selinger's stance hasn't really wavered. The PST currently rakes in about $280 million for the province annually.
He has committed to using the tax revenue created from the increase to fund a $5.5-billion plan that would focus on flood mitigation, road and bridge repair.
"The sales tax was a government decision, and Greg has repeatedly stated that he takes responsibility for the way in which it was introduced to Manitobans," Selinger's spokesperson told CBC News last week.
"It was a decision made following significant flood events and the need for a broader economic recovery plan. The sales tax has added much needed revenue to improve flood protection and address bridge and road infrastructure. And the overall economic plan has resulted in growth, protected services and job creation. The province's economic growth will be the best in the country over the next two years."
New childcare spaces
Selinger's 2014 budget guaranteed an increase of 5,000 new childcare spaces would be created. He has also claimed that under his watch the party would do away with interest on post-secondary university loans.