Personally, I'm against the kind of hunkered down tribalism of the 2-party system. It is challenging and difficult to campaign as a politician who wants to show that you will be responsive to the plethora of various needs and experience that our country expresses when you have to distill down to party purity in order to clench nomination.
But we are in a place where one of those two parties is not running in favor of democracy. It's running in favor of fascism. Until that party has either lost relevancy in American politics to the point it is a neutralized threat or until leadership changes significantly to more democracy minded people, this is a Fascism v Everyone Else election, and as a member of the Everyone Else party, we have to organize and throw everything we've got against fascism. These 3rd party ventures (including Cornell West in the Green Party) need to step down and take several seats. Take what your skill set is and use it to either throw it in the lot to defeat fascism, or shoot, use it to vet real leadership in the GOP if you want to be so bipartisan.