Since poor people are more likely to spend additional income, liberals tend to advocate policies that steer money towards the poor. Since taxes are a net drain on the economy, conservatives tend to support cutting taxes.
So here's my idea that I think everyone can get behind: make all income up to the federal poverty level tax exempt. For an Alaskan (the federal poverty level is the highest in that state.) living by himself, that would be $13,530.
People can argue all day long about what the poverty level should be later. But can't we all agree that a government that has enough money to give to multi-billion corporations should not be taking money from people who can barely make ends meet?
This would be a tax break that can pay for itself in the long run: poor people who can take care of themselves would be less dependent on social services.