How much does a politician who is good in one and not the other get penalized by the Canadian people?

By the Canadian press?

Here, sometimes a politician will essay some limping Spanish, and the English press will either brutalize him for it ("Screw them! Don't cater!") or ignore it, and SFAIK, the Spanish press will generally be kind, and the Spanish voters will be very kind, just for making the attempt, if they think it was sincere.