Actually, because his stats are off he is wrong. In general, areas that vote Republican tend to pay less in income taxes than areas that vote Democratic. People vote against their economic self-interest all the time. Really you’re left with two choices here:
1. Romney made an honest mistake, and either was completely unaware that say Oklahoma (where a family of 4 making the state median income would qualify for the Earned Income Tax Credit) hasn’t voted for a Democratic presidential nominee since LBJ, or thinks Oklahomans are on average a lot richer than they are.
2. When speaking to an audience full of rich people, Romney accused the poorer 47% of the country of having victimization and entitlement complexes, by citing a stat he knew was meaningless because he needed his audience to give him cash.
I don’t think either of these options should disqualify Romney, but it’s just silly to pretend the issue here has anything to do with Romney’s statement reflecting a truth.