The problem is that when they say they want to "lower taxes for everyone", typically 90+% of the "tax break" goes to the top 1% who can actually afford to pay more taxes.
The "military industrial complex" is a real problem. I'm for a strong defense, don't get me wrong. Paying "contractors" multiple hundreds of thousands of dollars a year is bullshit. They're mercenaries, short and simple. We're using our military to protect the interests of the corporations that are buying our politicians. This seems to be a much stronger trend on the Republican side, though that may be due to the differing rhetoric of the parties.
I think our country would be much better served by a parliamentary-style replacement of our current Congressional mess. Spread the power out amoung more than two parties. Give the vote percentages from each state to presidential candidates, instead of winner-take-all (I know this is state-by-state). Term limits in congress. Lots of things that will never happen because it would be the lawmakers legislating themselves out of a job.