I know your argument. I hear it everyday from fed up tea partiers at work. As a former gov’t teacher here is my explanation. Ever since George Washington (to his chagrin) we have had a 2 party system. Only a few times such as 1856-1860 has a 3rd party emerged to be dominant. In 1912 the Bull Moose party under Teddy Roosevelt almost pulled it off. I believe we have a structure now that we must work with. I will support any true conservative under the Republican ticket( I don’t know what to do with the Christies, Bushes, McConnells, Boehners, Cantors, etc.) As a nation I do not feel we can stand 4 or 8 more years of democratic-socialist tyranny. We must try to turn the rudder of the great ship America around and steer it towards orthodoxy and sanity. If Trump runs as a 3rd party, we are doomed with Presiden Clinton or Biden.