Limiting your data to 2012 is not a very reliable method. Also, as far as I can tell, the data you are citing is for household income. I doubt that a vote weighting system would be based on household income. Would people really accept that a husband and wife with a combined income of $100,000 get two votes each, while a single dude or a single gal who make $50k each only get one vote each? You are probably going to base it on tax paid, something like that. But if so, the exit poll data you cite aren't tightly indicative, because married people tend to have higher household incomes on average and also tend to be more Republican on average. But if wealth voting isn't based on household income but on individual income, that relationship may not hold. The pool of *individual* incomes over $100k, as opposed to household incomes, may include a greater number of singles and therefore a greater number of Democrats.
Anyhow, I'm just responding to the question in the OP. If you think that strictly weighting by income or wealth doesn't work for you, so you are only talking about some other system where everyone who makes over $70k gets an extra vote, something like that, fine, but that wasn't the scenario I was discussing.
Anyhow, I'm just responding to the question in the OP. If you think that strictly weighting by income or wealth doesn't work for you, so you are only talking about some other system where everyone who makes over $70k gets an extra vote, something like that, fine, but that wasn't the scenario I was discussing.