That's why the two party system used in the US, while in the surface looks democratic, engenders quite the opposite result. The nature of US politics is that everything a party will support (like global warming) will be bashed or denied by the other. Republican call this, quite accurately, wedge issues. Very soon, the only way to do anything is to get more and more money to be able to win enough support to maintain power (for a limited amount of time). It is clear that such a political system will benefit the owners of capital and restrict the voices of everyone else. We are just looking at the disfunction of a two-party system unfolding before our own eyes.