Voting against one's own interests

Read "Income Inequality Widens, Poor Take Big Hit During Recession" here.

Howard Dean is known for saying that the Republican party has been successful in manipulating working class voters, especially in the South, to vote against their own interests. Back in 2003 when he was running for president, Dean said:

I intend to talk about race during this election in the South because the Republicans have been talking about it since 1968 in order to divide us. . . . White folks in the South who drive pickup trucks with Confederate flag decals in the back ought to be voting with us and not them, because their kids don't have health insurance either and their kids need better schools, too.

Here is my rather sloppy take on this latest story about the victims of the recession: it was primarily republicans who deregulated the financial industry; this deregulation helped to cause the recession we're in; this recession victimized the poor and the middle class more than it did the wealthy; therefore, the poor and the middle class should not vote republican.