I guess if that's how you see it, I just have to disagree. To me, someone who voted for Obama/Biden twice, in both of those skits they do a fairly good job of making him seem incompetent, simple, and short-sighted. In the second, they equate him with their version of incompetent W - that doesn't seem all that flattering.
So despite a very well known SNL actor's ADMITTING that what they did was focused and political. Despite his extraordinarily relevant insight stating that they still do it that way... that's just how I see it?
At some point you have to wonder if your theories are falsifiable or if they're just dogma.
First, Chevy Chase hardly represents the current cast of SNL. He hasn't been on the show for decades.
Second, I was talking about how you think SNL is building up Biden with positive sketches. I don't agree that they are very positive. Sorry if that's my opinion.
Third, no shit they push a political agenda but its probably less biased than Fox News. They do attack those who are insanely inferior politically (Palin, Perry, Bachmann) because they can and should. I'm just saying that dumb Democrat decisions don't get the kid gloves you seem to be just so sure they do. After the election there hadn't been a lot of noteworthy political sketches this season, they didn't seem to be able to make light of the gun control debate, the sequester, etc.
EDIT: Adding the 'Biden Bash'[1]
[1] http://www.nbc.com/saturday-night-live/video/biden-bash/n320...