Millions of Americans are going to vote for someone other than Donald Trump and Hillary Clinton in November. The Libertarian Gary Johnson and the Green Party candidate Jill Stein together command about 10 percent of the vote in recent polls. Yet their supporters, who feel alienated from the two-party system, probably don't want their country to adopt a European-style multiparty parliamentary democracy, either.
For many third-party voters, the realization that the two major parties don't represent them occurred well before they were faced with the choice between Clinton and Trump. The problem is deeper than those candidates' personal unpopularity. That's why their emergence at the top of their respective party hierarchies may just be a catalyst for the U.S. political system to evolve.