That's the question posed by Kevin Drum at motherjones.com. He is skeptical that the enormous hatred from the right wing is burning itself out: "I've been repeatedly astonished at the relentlessness of the GOP base's hatred of Obamacare." But he does cite a report in the LA Times offering evidence that it might be happening. (BTW: Scriber shares his pessimism.)
It's a short read with a good graphic on the decline in the percentage of uninsured.