Do you think the DNC actually checked his full form birth certificate either?
I do. Do you really think the DNC would be dumb enough not to do their own background check on the first black Presidential nominee? Major party, that is.
Yes, I absolutely do. And remember, it's not about being "dumb". Let me ask you a question: At what point in the primary process do you think a political party will go dig up documentation in order to verify a candidates credentials? And if Obama handed them the same certification he put online, would they demand that he give them the full certificate? Of course they wouldn't.
Let me remind you that the birther movement started with the Clinton campaign. They were the first ones to question Obama on this. That's what prompted the original release of the certification. If the DNC had already checked Obama's full long form vital records prior to that point, why would Clinton's campaign have asked the question? The answer is obviously that they hadn't checked those records at that point.
Do you think they'd go check them once he won the nomination? There's no result except political disaster by doing that. If the documentation is fine, you gain nothing. But if there are any issues or irregularities with it, you just give ammunition to the other side. And that's even barring the possibility that there are major problems with it and you've just blown your own candidate out of the race. It's a lose/lose to check at that point.
Edit: Let me rephrase that, I'm sure the DNC checked all necessary forms to ensure legitimacy.
I'm sure you are wrong. I suspect that they did what they do with every candidate. They accept an affidavit from said candidate attesting that he meets the requirements. They then continue as though that's true, signing affidavits themselves attesting to the same fact. Unless something comes up to make one question the candidate's word, you'd never actually demand documentation. I'd be shocked if any party does. Yet you assume they did? Why?
The question only came up mid way through the primaries. And Obama showed the certification and that was good enough for the Democrats. I'll say again: Why would there have been any question among Democrats if they had already checked and verified the full records prior to him even entering the primary race? They didn't check then, and they didn't check when Clinton asked, and they certainly didn't check after he won the nomination.