Speaking in a Kelowna supermarket, Cummins said the move would also be good for the B.C. economy.
"The convenience stores would appreciate the opportunity to make those sales as well... so I think it does certainly impact on small business as well," he said.
Currently, Quebec is the only province in Canada where beer and wine can be purchased at such locations.
Earlier in the day, Cummins became the latest party leader to back upgrades to the Penticton Regional Hospital.
He will be in Vernon on Wednesday to make a policy announcement concerning ranchers.
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