re: "It only gets worse for Obummer from here."
That was written on May 2nd, when Gallup said Romney and Obummer were tied. Today, May 6th, Romney has finally taken the lead. For good, I think.
Polls results tend to flap in the breeze, and there are any number of things that COULD improve the situation for Obummer, but except for the brief surge he'll get immediately following the Democratic convention (Sept 7th), there's not much on the horizon that's favorable for him. He's about through being on top of the Gallup leader board.
http://www.gallup.com/poll/150743/Obama-Romney.aspx
Unfortunately, what Democrats haven't figured out (or, at least, aren't acknowledging) is that Romney is a FAR more likeable guy than 2008 McCain. And Obummer is a FAR less likeable guy than 2008 Obama.
The less biased polls, such as Gallup, should show evidence of that from here on out.