Wish we could but moderates are labeled traitors by the extremists on either side. It doesn't help that we have so-called news programs which thrive on acrimony and false/ misstated "facts". It would help tremendously if we could do away with the supreme court decision in citizens united. That one decision has turned our elections into auctions.
there are many parties on the ballot such as Liberitarians. However; the US government is set up with electorals. This means each state elects the President-not the people. They follow party lines. The two parties are where the money is at; the moderates can still belong to any party.