I don’t trust the polls, but a double digit lead has never been reversed the next day, that I can remember. 4 , 5, 6 % maybe but once you have gone above 10%, it shouldn’t happen, without someone cheating...
The Clintons know that Obama’s people will not have the time or resources to check all the late registrations, try and uncover out-of-state voters that were bused in etc..They have to move on to the next primary. So they will probably get away with this, as usual...