...blah blah superior conservative discourse...
Obama wasn't the one brought politics to this level. It was the GOP PR machine led by Newt Gingrich in 1994 and continued by Karl Rove and Frank Luntz which started the drive down to lowest common denominator buzzwords. The Clinton machine on the other side competed strongly in the race to the bottom. Remember, the first attacks against Obama were that he was too uppity and too intellectual for the American people.
The current Republican party definitely has no high ground on the level of political discourse. Look at this clip of a debate between Reagan and Bush in 1980:
https://www.youtube.com/watch?v=edchtf9MS7gThe 3/4ths of the 2012 field would've been laughed off the stage if they had a chance of participating in these debates. The ones who would have been respectable--Romney, Huntsman, and Gingrich--probably would've all finished third against Reagan and Bush.