--There will always, ultimately, be "two parties".--
So long as the "two parties" party stacks the deck in state election laws, yes, sadly.
Are you proposing that a "new" third party would never, ever, not ever do this? That they'd be willing to step aside to a competitor "fourth" party? How about a nationalist group from another country with "better" ideas for America?
This talk about "third" parties always makes me think of the Atom. For the sake of argument: If Republicans are the Protons, Democrats are the electrons, does this mean "third parties" are the neutrons, carrying no charge at all?
I'm not at all saying that various political interest groups do not have an important place in the body politic.
But how can a neutron (carrying no energy) become interchangeable with an electron or proton? There'd be no nucleus.
And so while I find these articles about "third parties" of interest, they really are simple "political interest parties" wishing they carried a genuine charge within the frame of the American nucleus. That's not to say that either electron or positron cannot shift the weight of the atom using the neutron to do so.
I'm praying the "neutrons" in this atom we call American politics will shift their vote to Republicans, instead of choosing this moment, 6 days before an election to talk about themselves and thereby lend their "shift" to their circling about the nucleus, electron (anti-electorate) party, Dems.
It's important to keep the sovereignty of the United States right inside the nucleus with the protons, and the electrons not in power bumping other countries agendas' and ideologies to invade our America, the nucleus; and thereby radically altering the shape, form and Constitution of the American nucleus.