The Lewinsky scandal clearly wasn't reported at all in the "mainstream media", not sir, you are absolutely correct about that one
Since when does Drudge breaking a story constitute the media not talking about it? Someone has to break a story, and in most cases it is exactly one source that does so. Your argument would only make any kind of sense if absolutely no one had talked about it once the story broke. Needless to say, making such a claim would be utterly ridiculous, as the whole thing was all over the press for a very long time, to the point that it even garnered significant attention in most western countries throughout the whole deal.
Claiming that the media only reports Republican scandals and falls asleep when a democrat holds the office of president isn't supported by reality. There is not an ounce of truth to it. The largest part of the larger media is interested in everything that gains attention and drives ratings. Especially channels like CNN. For them it doesn't matter who does what, as long as it creates a lot of interest.