You like the current duopoly, perpetually vote Dems and accept Republicans will take office some terms
You don’t like the current duopoly, vote third party, and accept you’re helping Republicans take office this term
If Republicans getting into office a few more terms means “the end of democracy” or “the end of X rights”, democracy and x rights are already on their way out. If more people voting third party makes the dems push for ranked voting or adopt policies that will solve the perpetual voting issue, then that lays the groundwork for a democratic future.
There’s a few situations
You like the current duopoly, perpetually vote Dems and accept Republicans will take office some terms
You don’t like the current duopoly, vote third party, and accept you’re helping Republicans take office this term
If Republicans getting into office a few more terms means “the end of democracy” or “the end of X rights”, democracy and x rights are already on their way out. If more people voting third party makes the dems push for ranked voting or adopt policies that will solve the perpetual voting issue, then that lays the groundwork for a democratic future.
See you at the ballot box.