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excellent reference to that essay. However, I disagree with your conclusion that it doesn't matter who votes. I don't know if I can put my hand on it, but I read a study recently that indicates that virtually 100% of people with a net worth in excess of $1 million vote. They also give money at very high rates to politicians and interest groups. They vote because they understand that it matters who votes - and who doesn't.
Too many working class, poor, and middle class people have bought into the myth that it doesn't matter if they vote. Bull shit! They have been told repeatedly that it doesn't matter, and our fearless infotainment media can't be bothered to explain the connection between political ideology and say, the collapse of that bridge in MN. It took more than 150 years from the time of the establishment of the US before we started getting decent social and economic justice for more than a handful of Americans. The backlash began immediately and the battle has been raging ever since. Voting and getting politicians into office to represent all but the top 5% of the population is a lifetime effort. We need to educate ourselves on our labor history, and work to make non-voters understand the connection between who is elected and say, the absence of defined benefit pension plans and soaring tuition bills, and our steep regressive taxes.
Come on! If it didn't matter who voted, then why have the republicans spent the last 50 years trying to keep poor and black people from voting??