One statistic from the Democratic primary in Pennsylvania was not widely reported. CNN exit poling showed that 15% of those voting in the Democratic primary plan to vote for McCain in November. Of these voters, 90% reported voting for Hillary Clinton.
Since Clinton reportedly won by 9.2%, the actual margin - without interference from CHAOS voters - would have given Obama a narrow victory
What can we expect in Indiana? Probably MUCH more of the same. Indiana is a highly republican state - and with no meaningful race on the Republican presidential side, they have little to lose by manipulating the Democratic vote. Moreover, unlike Pennsylvania, which was a closed primary, Indiana is open.
Another reason that Republican voters chose to interfere with the Democratic voting process is that they are highly dissatisfied with their own candidate.
On the Republican side, running basically unopposed, McCain was able to garner only 73% of the vote with 16% going to Ron Paul and 11% sticking with Mike Huckabee. Not a very solid endorsement.
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Correction (see below)
If 15 out of a 100 voters (15%) were operation chaos voters and 13.5 voted for Hillary, and 1.5 for Obama.
Hillary got 55 votes to Obama's 45 votes initially, but since 13.5 of Hillary voters (15 times 90%) would not vote for her again and only 1.5 of Obama's voters would not vote for him.
Without Operation chaos, the final vote would have been 42.5 Hillary and 43.5 Obama which would have given him a 51 to 49 victory.