I think (but am not sure) that it's a bit much to think all Repubs are stupid or delirious. Rather I see this as all-out partisan warfare on the part of the GOP to attack this Dem President and Congress as viciously as they can, on each and every issue, using whatever tools are at their disposal.
I generally agree with Mike. Without some data, it's hard to tell how many Republicans really buy into the Beck-Hannity-Limbaugh-Malkin rhetoric--though the education speech stuff has been ridiculous, especially considering that it was all optional on the part of the schools to begin with.
Still, it's amazing how much misinformation is out there. Substantial portions of the public believe that proposals for health care reform include government making end-of-life decisions and subsidies for illegal aliens to buy insurance. As with the run-up to the Iraq war, I think the press has been terrible as they continue to report what each side says instead of investigating what the facts might be. I know some conservatives will mock administration supporters for attacking the press, but it's for a different reason: it seems to me that conservatives attack the press for having a "liberal bias," while I'm complaining that the press just fails to deliver basic information whenever there's a dispute. (It seems to me people having a better handle on the facts would help the health care reform cause, so that doesn't say much for the liberal media bias theory.)
There does seem to be a conservative faction--I don't know how sizable--who just want Obama to fail at any cost. That's not to deny that there was probably a similar liberal faction when Bush was in office. But it's interesting to me that this Obama-hatred (if that's not to strong a word) started even before he took office, before he had a presidential record to criticize. In that way, it's not unlike when Clinton won; his detractors were ripping into him on Day 1, long before the Lewinsky affair or other scandals.
I was willing to give W the benefit of the doubt at first because he really did seem like a moderate during the 2000 campaign. But the true-but-misleading statements started pretty darn fast, the secrecy was ramped up almost immediately, and post-9/11 assertions of unchecked executive power posed what I thought was a threat to the foundations of our system of government. So if people have reasons to criticize Obama, that's fine with me.
But the education speech stuff really is bordering on the truly absurd and represent some other kind of opposition. As I wrote before, sometimes I think that if Obama brokered world peace, some people would attack him for putting defense contractors out of business.