Nor is anyone allowed to criticize the Bush Administration, by the same token. Just taking an oft-used argument during CalPuck's MooreGate and turning it back on those who purported this stance during that time.
And with Fox out there, we know that there are certainly places where non-GOP viewpoints thrive. (Acutally, after day 1 the RNC got almost as much airtime of speeches as did the first two days of the DNC).
RNC Airtime vs DNC Airtime