What if we had a political party that represented working people? All working people. Everybody. All races, ethnicities, genders, sexes, and religions. White, Christian, Black, Jewish, Muslim, agnostics, atheists, men, women, trans, and nonbinary.
@karawynn Good point.
What concerns me is that the Republicans are the party of the oligarchs and Christian dominionists and the Democrats are the party of the oligarchs and the professional-managerial class. Who represents everybody else? 
No one is. But we've known that for a while now. https://www.vox.com/2014/4/18/5624310/martin-gilens-testing-theories-of-american-politics-explained
The problem is that literally *all* the rules of the American political system are set up in a way that excludes the possibility of any third party ever being viable (meaning, able to achieve any of its goals). Third parties are dead-end efforts.
@karawynn Through much of the 20th Century, each party was itself a cluster of smaller parties. That's true for the Democrats today.
The Republicans' minority status is both their strength—they are far more likely to present a unified front than the Republicans—and weakness, because they haven't won a popular nationwide election in 20 years. Unfortunately for the US and world, the Republicans have managed to do well despite that handicap.