The Republican Party and the Democratic Party are the two major, dominating political parties in US politics.
Most state income taxes<span> have a similar </span>progressive structure<span>. A </span>regressive tax<span> is the exact opposite. Higher-income taxpayers pay a smaller percentage </span>of<span> their income than lower-income taxpayers because the </span>tax<span> is not based on ability to pay.</span>
