The two-party system of picking presidential candidates has failed. When America wanted Bernie Sanders, the nation elected his opposite, Donald Trump. How did that happen and how can we correct the problem? Instead of including most Americans, the two major parties now represent only Democrats and Republicans and omit independents. A possible solution is to eliminate national conventions and have a single national primary in the summer of election years. All candidates would compete in one primary and the top two finishers would compete in November of that year. This year the election might have featured Bernie Sanders versus Donald Trump or Bernie Sanders versus Hillary Clinton. A much better choice in a change year election.