That's not how the system works. All voting third party does is equivocate approval for the two front runners. Do you approve of the insurrectionist fascist and the neo-liberal equally? Are they exactly the same to you? Do you think they are equally supportive of election reform?
The fascists with minority support only have power because kids who don't understand the electoral system either abstain from voting, or vote third party. If everyone held their nose and showed up to vote lesser evil, the Republican party would wither away into being a third party themselves and a progressive party could actually gain footing.
Your candidate doesn't stand a chance precisely because people like you keep pretending the system works differently.