Considering that she had been way ahead in the polls in Indiana, it would seem that OC backfired and caused some Dems who were going to vote for Hillary to switch and vote for Obama. Seems like the same may have happened in NC, since Obama won by a larger margin than was expected.
There was also likely vote fraud for Obama in Gary Indiana.
No. Obama was ahead in Indiana, and originally claimed Indiana would be the "tie-breaker:" 'She won PA, I win NC, Indiana will be the tie-breaker' was his exact quote. He expected to win there, and even made a last minute stop to shore up the troops.
If anything, the "extremely slow" vote count in Gary Indiana is more of a reason the race closed than Dim backlash over OPCHAOS. Mysteriously, electronic machines "failed" -- reason unspecified -- in the later precincts in that county, and in places where similarly constituted Indiana voters went 65-35 for Obama, those precincts went 90-10 Obama. The close proximity to Chicago's South Side makes one suspect penumbras and emanations. (Republican election judges take note for November!)
Seems like the same may have happened in NC, since Obama won by a larger margin than was expected.
Originally, Obama led NC by 20+ points. It's not true that he won by a larger than expected margin, although his campaign has tried to spin it that way. In any event, NC was a closed primary, so there could not have been many cross-over votes for either candidate. The post election polling indicated late-deciding Dem voters swung Hillary as a result of the Wright controversy, in any event.
NC was nearly 100% racial, as predicted. The gap closed over the original >20% margin because of white Dims. Few 'Pubs had a chance to re-register in time to matter.