Wiki's overview of the constitutional history of Canada.
Canada's constitution has been successfully amended 10 times since 1982. There has been 2 failed attempts to amend the constitution since 1982; the Meech Lake Accord and the Charlottetown Accord.
A May 26th, 2011 Harris Decima polls shows the majority of Canadians are open to amending the constitution.
For instance, 61 per cent said they're prepared to re-open the Constitution to reform or abolish the appointed Senate.
And 58 per cent said they're willing to offer constitutional amendments in a bid to finally secure Quebec's signature on the Constitution.
Fifty-eight per cent also said they're willing to open up the Constitution to change the country's electoral system.