Canada awaited results Tuesday from a referendum that could put oil-rich Alberta on a path toward independence, testing Prime Minister Mark Carney's push for unity amid U.S. President Donald Trump's trade war and annexation threats.

Results were delayed after late openings forced more than 100 polling stations to extend voting hours Monday.

More than 1. 35 million Albertans, or 43% of eligible voters, cast advance or special ballots.