Imagine this:

The Republican Party has nominated a political outsider to run for President. Running on a far-right platform that beckons back to a darker side of American history, his campaign pushes for partisanship, hate, xenophobia, and a general resentment for the U.S. government. The Democratic Party, meanwhile, is at a crossroads: one candidate, incredibly popular with younger voters, is focusing on promoting progressive policies such as healthcare, economic inequality, and campaign finance reform. Against the progressive agenda stars a more moderate, "middle-of-the-road" establishment Democrat that, while popular, does not seem to be getting enough support to overtake the Republican candidate. This leads to the Democratic Party splitting between the two candidates, the establishment Democrat winning the primary, and many dissatisfied progressives vowing to not vote for her in the general election. Naturally, this division leads the Republican candidate to victory.