As political parties joust for the affection of the middle class in our upcoming fall election, the issue of child care is becoming increasingly contentious.  The policy challenge is longstanding but also remains the same:  how do we provide good quality child care to parents of all economic backgrounds, no matter where one resides in Canada?  As campaign issues go, child care is one of the more interesting ones to hit the federal political scene in a long while, precisely because of its broad appeal.  …