No, the question shouldn't be who started talking about the CPP and retirement security first - even if the answer is the NDP.
Instead, there's a real policy difference between a party which is working to substantially improve the lot of seniors generally, and one whose plan only benefits those who have discretionary money to burn.
In fact, the most important difference between the Libs' and Cons' respective plans for selective coverage is that the Cons have chosen to toss an extra cut to the finance sector in the process. So the NDP's platform stands apart in actually meeting the public demand for increased standard CPP benefits.
And with that in mind, it's well worth paying far more attention to who has the right answer, and far less to who started asking the question first.