I like the "holding to the bounce" theory, even though the primaries so far have produced no "bounces" whatsoever into the next primary/caucus.
There have been national bounces, though. Just for intrigue's sake, I should note this.
mc cain has had bounce in Michigan (in polls) just after his win in NH. But fading very fast.
some weeks ago, Romney did good in polls in SC, FL,... but due to "silver medals", he was going down. With the very good coverage after Michigan, I wait a bounce in next SC polls. Wait and see...