Consensus of surveys now show about a 4 point Obama advantage over Hillary. 5 point advantage of McCain over Romney. So the ground has definitely shifted.

McCain obviously would be Obama's strongest opponent. But Hillary's "experience"" allegation is a Potemkin village--and would be no help for her against McCain. Obama's "change" approach would still be effective.

And there's talk that Rig's boy, Lou Dobbs, may enter the race. That would be icing on the cake for Obama--Dobbs would split off the anti-immigration fire-eaters--mainly Republicans.