Moe condemned the "misguided protest" outside Dr. Saqib Shahab's home.
This was the third provincial election held during the COVID-19 pandemic.
The Saskatchewan Party leader was 23 when the incident occurred.
Premier Scott Moe said the number of COVID-19 cases will be monitored at each stage.
"If you don't do this, you're now breaking the law."
The province is supposed to head to the polls in October.
The premiers discussed tensions with Ottawa during a panel in Washington.
Scott Moe says he got advice from his daughter on whether to attend.
The resistance is, supposedly, giving way to consensus.
Alberta Premier Jason Kenney said he was “delighted” that all premiers agreed on the request.