An elementary school in Amherst will be the location of a Conservative rally this Sunday afternoon where party leader Stephen Harper is expected to attend, CBC News has learned.

Cumberland North Academy will be Harper's first stop in Nova Scotia for the 2015 election campaign.

Conservative Party organizers have so far refused to say where the meeting will take place. Residents and the media have to register online to attend. If you register, you get an email saying the location of the event will be revealed 24 to 72 hours before the meeting.

Scott Armstrong is the Conservative incumbent for the Cumberland-Colchester riding. Former Conservative MP Bill Casey is representing the Liberals during this election.

Casey made headlines in 2007 when he was kicked out of Harper's Conservative caucus for voting against his government's budget.

He says he tried to register to attend Sunday's meeting.

"I've never seen anything like it. We've had prime ministers here and they just walk through the crowds and everybody's allowed to wander in and meet the people," said Casey.

"Why these restrictions? I don't know, but it's not the democracy I'm used to."

Armstrong says calling the event secret is opposition spin.

"Obviously they don't like the prime minister coming to the riding because they know that the prime minister will talk about the economy, he will talk about the success we've had as a government on guiding Canada through the largest recession since the great depression of the 30s," he said.

Wendy Robinson is running for the New Democratic Party while Jason Blanch is the Green Party candidate for Cumberland-Colchester.