P.E.I. Senator Mike Duffy. (DANIEL R. PEARCE/QMI AGENCY)

Two of three Maritime premiers have already rejected the idea of a Maritime union being floated by three Conservative senators.

The Tory trio — New Brunswick's John Wallace, P.E.I.'s Mike Duffy and Nova Scotia's Stephen Greene — recently renewed a 150-year-old push for Canada's three Maritime provinces to merge.

Proponents of the move cite economic benefits for the provinces, all of which are struggling financially.

But two of the three premiers have said they don't share the vision.

"I prefer to take a much more practical and pragmatic view of this, which is Maritime co-operation," Nova Scotia's Darrell Dexter told the Halifax Chronicle-Herald.

"It's preposterous," P.E.I's Robert Ghiz told Maclean's. "It's just not a good idea. And if you want me to be a little mean about it, I think it's a very simplistic view."

New Brunswick Premier David Alward hasn't commented on the proposal.